Commit | Line | Data |
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c906108c | 1 | /* Everything about breakpoints, for GDB. |
8926118c | 2 | |
6aba47ca | 3 | Copyright (C) 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, |
9b254dd1 | 4 | 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, |
7b6bb8da | 5 | 2008, 2009, 2010, 2011 Free Software Foundation, Inc. |
c906108c | 6 | |
c5aa993b | 7 | This file is part of GDB. |
c906108c | 8 | |
c5aa993b JM |
9 | This program is free software; you can redistribute it and/or modify |
10 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 11 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b | 12 | (at your option) any later version. |
c906108c | 13 | |
c5aa993b JM |
14 | This program is distributed in the hope that it will be useful, |
15 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | GNU General Public License for more details. | |
c906108c | 18 | |
c5aa993b | 19 | You should have received a copy of the GNU General Public License |
a9762ec7 | 20 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c SS |
21 | |
22 | #include "defs.h" | |
a6d9a66e | 23 | #include "arch-utils.h" |
c906108c | 24 | #include <ctype.h> |
776592bf | 25 | #include "hashtab.h" |
c906108c SS |
26 | #include "symtab.h" |
27 | #include "frame.h" | |
28 | #include "breakpoint.h" | |
1042e4c0 | 29 | #include "tracepoint.h" |
c906108c SS |
30 | #include "gdbtypes.h" |
31 | #include "expression.h" | |
32 | #include "gdbcore.h" | |
33 | #include "gdbcmd.h" | |
34 | #include "value.h" | |
35 | #include "command.h" | |
36 | #include "inferior.h" | |
37 | #include "gdbthread.h" | |
38 | #include "target.h" | |
39 | #include "language.h" | |
40 | #include "gdb_string.h" | |
41 | #include "demangle.h" | |
42 | #include "annotate.h" | |
43 | #include "symfile.h" | |
44 | #include "objfiles.h" | |
0378c332 | 45 | #include "source.h" |
c5f0f3d0 | 46 | #include "linespec.h" |
c94fdfd0 | 47 | #include "completer.h" |
5b7f31a4 | 48 | #include "gdb.h" |
8b93c638 | 49 | #include "ui-out.h" |
e1507482 | 50 | #include "cli/cli-script.h" |
0225421b | 51 | #include "gdb_assert.h" |
fe898f56 | 52 | #include "block.h" |
a77053c2 | 53 | #include "solib.h" |
84acb35a JJ |
54 | #include "solist.h" |
55 | #include "observer.h" | |
60250e8b | 56 | #include "exceptions.h" |
765dc015 | 57 | #include "memattr.h" |
f7f9143b | 58 | #include "ada-lang.h" |
d1aa2f50 | 59 | #include "top.h" |
fa4727a6 | 60 | #include "wrapper.h" |
79a45b7d | 61 | #include "valprint.h" |
4efc6507 | 62 | #include "jit.h" |
a96d9b2e | 63 | #include "xml-syscall.h" |
65d79d4b | 64 | #include "parser-defs.h" |
c906108c | 65 | |
1042e4c0 SS |
66 | /* readline include files */ |
67 | #include "readline/readline.h" | |
68 | #include "readline/history.h" | |
69 | ||
70 | /* readline defines this. */ | |
71 | #undef savestring | |
72 | ||
034dad6f | 73 | #include "mi/mi-common.h" |
104c1213 | 74 | |
44feb3ce TT |
75 | /* Arguments to pass as context to some catch command handlers. */ |
76 | #define CATCH_PERMANENT ((void *) (uintptr_t) 0) | |
77 | #define CATCH_TEMPORARY ((void *) (uintptr_t) 1) | |
c906108c | 78 | |
4a64f543 | 79 | /* Prototypes for local functions. */ |
c906108c | 80 | |
a14ed312 | 81 | static void enable_delete_command (char *, int); |
c906108c | 82 | |
a14ed312 | 83 | static void enable_once_command (char *, int); |
c906108c | 84 | |
a14ed312 | 85 | static void disable_command (char *, int); |
c906108c | 86 | |
a14ed312 | 87 | static void enable_command (char *, int); |
c906108c | 88 | |
95a42b64 TT |
89 | static void map_breakpoint_numbers (char *, void (*) (struct breakpoint *, |
90 | void *), | |
91 | void *); | |
c906108c | 92 | |
a14ed312 | 93 | static void ignore_command (char *, int); |
c906108c | 94 | |
4efb68b1 | 95 | static int breakpoint_re_set_one (void *); |
c906108c | 96 | |
a14ed312 | 97 | static void clear_command (char *, int); |
c906108c | 98 | |
a14ed312 | 99 | static void catch_command (char *, int); |
c906108c | 100 | |
a14ed312 | 101 | static int can_use_hardware_watchpoint (struct value *); |
c906108c | 102 | |
98deb0da | 103 | static void break_command_1 (char *, int, int); |
c906108c | 104 | |
a14ed312 | 105 | static void mention (struct breakpoint *); |
c906108c | 106 | |
4a64f543 MS |
107 | /* This function is used in gdbtk sources and thus can not be made |
108 | static. */ | |
63c252f8 | 109 | struct breakpoint *set_raw_breakpoint (struct gdbarch *gdbarch, |
a6d9a66e UW |
110 | struct symtab_and_line, |
111 | enum bptype); | |
c906108c | 112 | |
76897487 KB |
113 | static void breakpoint_adjustment_warning (CORE_ADDR, CORE_ADDR, int, int); |
114 | ||
a6d9a66e UW |
115 | static CORE_ADDR adjust_breakpoint_address (struct gdbarch *gdbarch, |
116 | CORE_ADDR bpaddr, | |
88f7da05 | 117 | enum bptype bptype); |
76897487 | 118 | |
6c95b8df PA |
119 | static void describe_other_breakpoints (struct gdbarch *, |
120 | struct program_space *, CORE_ADDR, | |
5af949e3 | 121 | struct obj_section *, int); |
c906108c | 122 | |
6c95b8df PA |
123 | static int breakpoint_address_match (struct address_space *aspace1, |
124 | CORE_ADDR addr1, | |
125 | struct address_space *aspace2, | |
126 | CORE_ADDR addr2); | |
127 | ||
85d721b8 PA |
128 | static int watchpoint_locations_match (struct bp_location *loc1, |
129 | struct bp_location *loc2); | |
130 | ||
a14ed312 | 131 | static void breakpoints_info (char *, int); |
c906108c | 132 | |
d77f58be SS |
133 | static void watchpoints_info (char *, int); |
134 | ||
135 | static int breakpoint_1 (int, int, int (*) (const struct breakpoint *)); | |
c906108c | 136 | |
4efb68b1 | 137 | static int breakpoint_cond_eval (void *); |
c906108c | 138 | |
4efb68b1 | 139 | static void cleanup_executing_breakpoints (void *); |
c906108c | 140 | |
a14ed312 | 141 | static void commands_command (char *, int); |
c906108c | 142 | |
a14ed312 | 143 | static void condition_command (char *, int); |
c906108c | 144 | |
a14ed312 | 145 | static int get_number_trailer (char **, int); |
c906108c | 146 | |
c5aa993b JM |
147 | typedef enum |
148 | { | |
149 | mark_inserted, | |
150 | mark_uninserted | |
151 | } | |
152 | insertion_state_t; | |
c906108c | 153 | |
0bde7532 | 154 | static int remove_breakpoint (struct bp_location *, insertion_state_t); |
6c95b8df | 155 | static int remove_breakpoint_1 (struct bp_location *, insertion_state_t); |
c906108c | 156 | |
a14ed312 | 157 | static enum print_stop_action print_it_typical (bpstat); |
e514a9d6 JM |
158 | |
159 | static enum print_stop_action print_bp_stop_message (bpstat bs); | |
c906108c | 160 | |
4efb68b1 | 161 | static int watchpoint_check (void *); |
c906108c | 162 | |
a14ed312 | 163 | static void maintenance_info_breakpoints (char *, int); |
c906108c | 164 | |
a14ed312 | 165 | static int hw_breakpoint_used_count (void); |
c906108c | 166 | |
a14ed312 | 167 | static int hw_watchpoint_used_count (enum bptype, int *); |
c906108c | 168 | |
a14ed312 | 169 | static void hbreak_command (char *, int); |
c906108c | 170 | |
a14ed312 | 171 | static void thbreak_command (char *, int); |
c906108c | 172 | |
a14ed312 | 173 | static void do_enable_breakpoint (struct breakpoint *, enum bpdisp); |
c906108c | 174 | |
a14ed312 | 175 | static void stop_command (char *arg, int from_tty); |
7a292a7a | 176 | |
a14ed312 | 177 | static void stopin_command (char *arg, int from_tty); |
7a292a7a | 178 | |
a14ed312 | 179 | static void stopat_command (char *arg, int from_tty); |
7a292a7a | 180 | |
a14ed312 | 181 | static char *ep_parse_optional_if_clause (char **arg); |
7a292a7a | 182 | |
d85310f7 MS |
183 | static void catch_exception_command_1 (enum exception_event_kind ex_event, |
184 | char *arg, int tempflag, int from_tty); | |
7a292a7a | 185 | |
a14ed312 | 186 | static void tcatch_command (char *arg, int from_tty); |
7a292a7a | 187 | |
a14ed312 | 188 | static void ep_skip_leading_whitespace (char **s); |
7a292a7a | 189 | |
d03285ec UW |
190 | static void detach_single_step_breakpoints (void); |
191 | ||
6c95b8df PA |
192 | static int single_step_breakpoint_inserted_here_p (struct address_space *, |
193 | CORE_ADDR pc); | |
1aafd4da | 194 | |
fe3f5fa8 | 195 | static void free_bp_location (struct bp_location *loc); |
f431efe5 PA |
196 | static void incref_bp_location (struct bp_location *loc); |
197 | static void decref_bp_location (struct bp_location **loc); | |
fe3f5fa8 | 198 | |
39d61571 | 199 | static struct bp_location *allocate_bp_location (struct breakpoint *bpt); |
a5606eee | 200 | |
b60e7edf | 201 | static void update_global_location_list (int); |
a5606eee | 202 | |
b60e7edf | 203 | static void update_global_location_list_nothrow (int); |
74960c60 | 204 | |
d77f58be | 205 | static int is_hardware_watchpoint (const struct breakpoint *bpt); |
74960c60 | 206 | |
d77f58be | 207 | static int is_watchpoint (const struct breakpoint *bpt); |
60e1c644 | 208 | |
74960c60 | 209 | static void insert_breakpoint_locations (void); |
a5606eee | 210 | |
a96d9b2e SDJ |
211 | static int syscall_catchpoint_p (struct breakpoint *b); |
212 | ||
1042e4c0 SS |
213 | static void tracepoints_info (char *, int); |
214 | ||
215 | static void delete_trace_command (char *, int); | |
216 | ||
217 | static void enable_trace_command (char *, int); | |
218 | ||
219 | static void disable_trace_command (char *, int); | |
220 | ||
221 | static void trace_pass_command (char *, int); | |
222 | ||
0fb4aa4b PA |
223 | /* Assuming we're creating a static tracepoint, does S look like a |
224 | static tracepoint marker spec ("-m MARKER_ID")? */ | |
225 | #define is_marker_spec(s) \ | |
f5a8e22b | 226 | (s != NULL && strncmp (s, "-m", 2) == 0 && ((s)[2] == ' ' || (s)[2] == '\t')) |
0fb4aa4b | 227 | |
5cea2a26 PA |
228 | /* A reference-counted struct command_line. This lets multiple |
229 | breakpoints share a single command list. */ | |
230 | struct counted_command_line | |
231 | { | |
232 | /* The reference count. */ | |
233 | int refc; | |
234 | ||
235 | /* The command list. */ | |
236 | struct command_line *commands; | |
237 | }; | |
238 | ||
239 | struct command_line * | |
240 | breakpoint_commands (struct breakpoint *b) | |
241 | { | |
242 | return b->commands ? b->commands->commands : NULL; | |
243 | } | |
3daf8fe5 | 244 | |
f3b1572e PA |
245 | /* Flag indicating that a command has proceeded the inferior past the |
246 | current breakpoint. */ | |
247 | ||
248 | static int breakpoint_proceeded; | |
249 | ||
2cec12e5 AR |
250 | static const char * |
251 | bpdisp_text (enum bpdisp disp) | |
252 | { | |
4a64f543 MS |
253 | /* NOTE: the following values are a part of MI protocol and |
254 | represent values of 'disp' field returned when inferior stops at | |
255 | a breakpoint. */ | |
bc043ef3 | 256 | static const char * const bpdisps[] = {"del", "dstp", "dis", "keep"}; |
cc59ec59 | 257 | |
2cec12e5 AR |
258 | return bpdisps[(int) disp]; |
259 | } | |
c906108c | 260 | |
4a64f543 | 261 | /* Prototypes for exported functions. */ |
c906108c | 262 | /* If FALSE, gdb will not use hardware support for watchpoints, even |
4a64f543 | 263 | if such is available. */ |
c906108c SS |
264 | static int can_use_hw_watchpoints; |
265 | ||
920d2a44 AC |
266 | static void |
267 | show_can_use_hw_watchpoints (struct ui_file *file, int from_tty, | |
268 | struct cmd_list_element *c, | |
269 | const char *value) | |
270 | { | |
3e43a32a MS |
271 | fprintf_filtered (file, |
272 | _("Debugger's willingness to use " | |
273 | "watchpoint hardware is %s.\n"), | |
920d2a44 AC |
274 | value); |
275 | } | |
276 | ||
fa8d40ab JJ |
277 | /* If AUTO_BOOLEAN_FALSE, gdb will not attempt to create pending breakpoints. |
278 | If AUTO_BOOLEAN_TRUE, gdb will automatically create pending breakpoints | |
4a64f543 | 279 | for unrecognized breakpoint locations. |
fa8d40ab JJ |
280 | If AUTO_BOOLEAN_AUTO, gdb will query when breakpoints are unrecognized. */ |
281 | static enum auto_boolean pending_break_support; | |
920d2a44 AC |
282 | static void |
283 | show_pending_break_support (struct ui_file *file, int from_tty, | |
284 | struct cmd_list_element *c, | |
285 | const char *value) | |
286 | { | |
3e43a32a MS |
287 | fprintf_filtered (file, |
288 | _("Debugger's behavior regarding " | |
289 | "pending breakpoints is %s.\n"), | |
920d2a44 AC |
290 | value); |
291 | } | |
fa8d40ab | 292 | |
765dc015 | 293 | /* If 1, gdb will automatically use hardware breakpoints for breakpoints |
4a64f543 | 294 | set with "break" but falling in read-only memory. |
765dc015 VP |
295 | If 0, gdb will warn about such breakpoints, but won't automatically |
296 | use hardware breakpoints. */ | |
297 | static int automatic_hardware_breakpoints; | |
298 | static void | |
299 | show_automatic_hardware_breakpoints (struct ui_file *file, int from_tty, | |
300 | struct cmd_list_element *c, | |
301 | const char *value) | |
302 | { | |
3e43a32a MS |
303 | fprintf_filtered (file, |
304 | _("Automatic usage of hardware breakpoints is %s.\n"), | |
765dc015 VP |
305 | value); |
306 | } | |
307 | ||
33e5cbd6 PA |
308 | /* If on, gdb will keep breakpoints inserted even as inferior is |
309 | stopped, and immediately insert any new breakpoints. If off, gdb | |
310 | will insert breakpoints into inferior only when resuming it, and | |
311 | will remove breakpoints upon stop. If auto, GDB will behave as ON | |
312 | if in non-stop mode, and as OFF if all-stop mode.*/ | |
313 | ||
314 | static const char always_inserted_auto[] = "auto"; | |
315 | static const char always_inserted_on[] = "on"; | |
316 | static const char always_inserted_off[] = "off"; | |
317 | static const char *always_inserted_enums[] = { | |
318 | always_inserted_auto, | |
319 | always_inserted_off, | |
320 | always_inserted_on, | |
321 | NULL | |
322 | }; | |
323 | static const char *always_inserted_mode = always_inserted_auto; | |
324 | static void | |
74960c60 | 325 | show_always_inserted_mode (struct ui_file *file, int from_tty, |
33e5cbd6 | 326 | struct cmd_list_element *c, const char *value) |
74960c60 | 327 | { |
33e5cbd6 | 328 | if (always_inserted_mode == always_inserted_auto) |
3e43a32a MS |
329 | fprintf_filtered (file, |
330 | _("Always inserted breakpoint " | |
331 | "mode is %s (currently %s).\n"), | |
33e5cbd6 PA |
332 | value, |
333 | breakpoints_always_inserted_mode () ? "on" : "off"); | |
334 | else | |
3e43a32a MS |
335 | fprintf_filtered (file, _("Always inserted breakpoint mode is %s.\n"), |
336 | value); | |
74960c60 VP |
337 | } |
338 | ||
33e5cbd6 PA |
339 | int |
340 | breakpoints_always_inserted_mode (void) | |
341 | { | |
342 | return (always_inserted_mode == always_inserted_on | |
343 | || (always_inserted_mode == always_inserted_auto && non_stop)); | |
344 | } | |
765dc015 | 345 | |
a14ed312 | 346 | void _initialize_breakpoint (void); |
c906108c | 347 | |
c906108c SS |
348 | /* Are we executing breakpoint commands? */ |
349 | static int executing_breakpoint_commands; | |
350 | ||
c02f5703 MS |
351 | /* Are overlay event breakpoints enabled? */ |
352 | static int overlay_events_enabled; | |
353 | ||
c906108c | 354 | /* Walk the following statement or block through all breakpoints. |
4a64f543 MS |
355 | ALL_BREAKPOINTS_SAFE does so even if the statment deletes the |
356 | current breakpoint. */ | |
c906108c | 357 | |
5c44784c | 358 | #define ALL_BREAKPOINTS(B) for (B = breakpoint_chain; B; B = B->next) |
c906108c | 359 | |
5c44784c JM |
360 | #define ALL_BREAKPOINTS_SAFE(B,TMP) \ |
361 | for (B = breakpoint_chain; \ | |
362 | B ? (TMP=B->next, 1): 0; \ | |
363 | B = TMP) | |
c906108c | 364 | |
4a64f543 MS |
365 | /* Similar iterator for the low-level breakpoints. SAFE variant is |
366 | not provided so update_global_location_list must not be called | |
367 | while executing the block of ALL_BP_LOCATIONS. */ | |
7cc221ef | 368 | |
876fa593 JK |
369 | #define ALL_BP_LOCATIONS(B,BP_TMP) \ |
370 | for (BP_TMP = bp_location; \ | |
371 | BP_TMP < bp_location + bp_location_count && (B = *BP_TMP); \ | |
372 | BP_TMP++) | |
7cc221ef | 373 | |
1042e4c0 SS |
374 | /* Iterator for tracepoints only. */ |
375 | ||
376 | #define ALL_TRACEPOINTS(B) \ | |
377 | for (B = breakpoint_chain; B; B = B->next) \ | |
d77f58be | 378 | if (is_tracepoint (B)) |
1042e4c0 | 379 | |
7cc221ef | 380 | /* Chains of all breakpoints defined. */ |
c906108c SS |
381 | |
382 | struct breakpoint *breakpoint_chain; | |
383 | ||
876fa593 JK |
384 | /* Array is sorted by bp_location_compare - primarily by the ADDRESS. */ |
385 | ||
386 | static struct bp_location **bp_location; | |
387 | ||
388 | /* Number of elements of BP_LOCATION. */ | |
389 | ||
390 | static unsigned bp_location_count; | |
391 | ||
4a64f543 MS |
392 | /* Maximum alignment offset between bp_target_info.PLACED_ADDRESS and |
393 | ADDRESS for the current elements of BP_LOCATION which get a valid | |
394 | result from bp_location_has_shadow. You can use it for roughly | |
395 | limiting the subrange of BP_LOCATION to scan for shadow bytes for | |
396 | an address you need to read. */ | |
876fa593 JK |
397 | |
398 | static CORE_ADDR bp_location_placed_address_before_address_max; | |
399 | ||
4a64f543 MS |
400 | /* Maximum offset plus alignment between bp_target_info.PLACED_ADDRESS |
401 | + bp_target_info.SHADOW_LEN and ADDRESS for the current elements of | |
402 | BP_LOCATION which get a valid result from bp_location_has_shadow. | |
403 | You can use it for roughly limiting the subrange of BP_LOCATION to | |
404 | scan for shadow bytes for an address you need to read. */ | |
876fa593 JK |
405 | |
406 | static CORE_ADDR bp_location_shadow_len_after_address_max; | |
7cc221ef | 407 | |
4a64f543 MS |
408 | /* The locations that no longer correspond to any breakpoint, unlinked |
409 | from bp_location array, but for which a hit may still be reported | |
410 | by a target. */ | |
20874c92 VP |
411 | VEC(bp_location_p) *moribund_locations = NULL; |
412 | ||
c906108c SS |
413 | /* Number of last breakpoint made. */ |
414 | ||
95a42b64 TT |
415 | static int breakpoint_count; |
416 | ||
86b17b60 PA |
417 | /* The value of `breakpoint_count' before the last command that |
418 | created breakpoints. If the last (break-like) command created more | |
419 | than one breakpoint, then the difference between BREAKPOINT_COUNT | |
420 | and PREV_BREAKPOINT_COUNT is more than one. */ | |
421 | static int prev_breakpoint_count; | |
c906108c | 422 | |
1042e4c0 SS |
423 | /* Number of last tracepoint made. */ |
424 | ||
95a42b64 | 425 | static int tracepoint_count; |
1042e4c0 | 426 | |
6149aea9 PA |
427 | static struct cmd_list_element *breakpoint_set_cmdlist; |
428 | static struct cmd_list_element *breakpoint_show_cmdlist; | |
9291a0cd | 429 | struct cmd_list_element *save_cmdlist; |
6149aea9 | 430 | |
468d015d JJ |
431 | /* Return whether a breakpoint is an active enabled breakpoint. */ |
432 | static int | |
433 | breakpoint_enabled (struct breakpoint *b) | |
434 | { | |
0d381245 | 435 | return (b->enable_state == bp_enabled); |
468d015d JJ |
436 | } |
437 | ||
c906108c SS |
438 | /* Set breakpoint count to NUM. */ |
439 | ||
95a42b64 | 440 | static void |
fba45db2 | 441 | set_breakpoint_count (int num) |
c906108c | 442 | { |
86b17b60 | 443 | prev_breakpoint_count = breakpoint_count; |
c906108c | 444 | breakpoint_count = num; |
4fa62494 | 445 | set_internalvar_integer (lookup_internalvar ("bpnum"), num); |
c906108c SS |
446 | } |
447 | ||
86b17b60 PA |
448 | /* Used by `start_rbreak_breakpoints' below, to record the current |
449 | breakpoint count before "rbreak" creates any breakpoint. */ | |
450 | static int rbreak_start_breakpoint_count; | |
451 | ||
95a42b64 TT |
452 | /* Called at the start an "rbreak" command to record the first |
453 | breakpoint made. */ | |
86b17b60 | 454 | |
95a42b64 TT |
455 | void |
456 | start_rbreak_breakpoints (void) | |
457 | { | |
86b17b60 | 458 | rbreak_start_breakpoint_count = breakpoint_count; |
95a42b64 TT |
459 | } |
460 | ||
461 | /* Called at the end of an "rbreak" command to record the last | |
462 | breakpoint made. */ | |
86b17b60 | 463 | |
95a42b64 TT |
464 | void |
465 | end_rbreak_breakpoints (void) | |
466 | { | |
86b17b60 | 467 | prev_breakpoint_count = rbreak_start_breakpoint_count; |
95a42b64 TT |
468 | } |
469 | ||
4a64f543 | 470 | /* Used in run_command to zero the hit count when a new run starts. */ |
c906108c SS |
471 | |
472 | void | |
fba45db2 | 473 | clear_breakpoint_hit_counts (void) |
c906108c SS |
474 | { |
475 | struct breakpoint *b; | |
476 | ||
477 | ALL_BREAKPOINTS (b) | |
478 | b->hit_count = 0; | |
479 | } | |
480 | ||
9add0f1b TT |
481 | /* Allocate a new counted_command_line with reference count of 1. |
482 | The new structure owns COMMANDS. */ | |
483 | ||
484 | static struct counted_command_line * | |
485 | alloc_counted_command_line (struct command_line *commands) | |
486 | { | |
487 | struct counted_command_line *result | |
488 | = xmalloc (sizeof (struct counted_command_line)); | |
cc59ec59 | 489 | |
9add0f1b TT |
490 | result->refc = 1; |
491 | result->commands = commands; | |
492 | return result; | |
493 | } | |
494 | ||
495 | /* Increment reference count. This does nothing if CMD is NULL. */ | |
496 | ||
497 | static void | |
498 | incref_counted_command_line (struct counted_command_line *cmd) | |
499 | { | |
500 | if (cmd) | |
501 | ++cmd->refc; | |
502 | } | |
503 | ||
504 | /* Decrement reference count. If the reference count reaches 0, | |
505 | destroy the counted_command_line. Sets *CMDP to NULL. This does | |
506 | nothing if *CMDP is NULL. */ | |
507 | ||
508 | static void | |
509 | decref_counted_command_line (struct counted_command_line **cmdp) | |
510 | { | |
511 | if (*cmdp) | |
512 | { | |
513 | if (--(*cmdp)->refc == 0) | |
514 | { | |
515 | free_command_lines (&(*cmdp)->commands); | |
516 | xfree (*cmdp); | |
517 | } | |
518 | *cmdp = NULL; | |
519 | } | |
520 | } | |
521 | ||
522 | /* A cleanup function that calls decref_counted_command_line. */ | |
523 | ||
524 | static void | |
525 | do_cleanup_counted_command_line (void *arg) | |
526 | { | |
527 | decref_counted_command_line (arg); | |
528 | } | |
529 | ||
530 | /* Create a cleanup that calls decref_counted_command_line on the | |
531 | argument. */ | |
532 | ||
533 | static struct cleanup * | |
534 | make_cleanup_decref_counted_command_line (struct counted_command_line **cmdp) | |
535 | { | |
536 | return make_cleanup (do_cleanup_counted_command_line, cmdp); | |
537 | } | |
538 | ||
c906108c SS |
539 | /* Default address, symtab and line to put a breakpoint at |
540 | for "break" command with no arg. | |
4a64f543 | 541 | If default_breakpoint_valid is zero, the other three are |
c906108c SS |
542 | not valid, and "break" with no arg is an error. |
543 | ||
544 | This set by print_stack_frame, which calls set_default_breakpoint. */ | |
545 | ||
546 | int default_breakpoint_valid; | |
547 | CORE_ADDR default_breakpoint_address; | |
548 | struct symtab *default_breakpoint_symtab; | |
549 | int default_breakpoint_line; | |
6c95b8df PA |
550 | struct program_space *default_breakpoint_pspace; |
551 | ||
c906108c | 552 | \f |
4a64f543 MS |
553 | /* *PP is a string denoting a breakpoint. Get the number of the |
554 | breakpoint. Advance *PP after the string and any trailing | |
555 | whitespace. | |
c906108c | 556 | |
4a64f543 MS |
557 | Currently the string can either be a number or "$" followed by the |
558 | name of a convenience variable. Making it an expression wouldn't | |
559 | work well for map_breakpoint_numbers (e.g. "4 + 5 + 6"). | |
40c03ae8 EZ |
560 | |
561 | If the string is a NULL pointer, that denotes the last breakpoint. | |
5c44784c JM |
562 | |
563 | TRAILER is a character which can be found after the number; most | |
4a64f543 MS |
564 | commonly this is `-'. If you don't want a trailer, use \0. */ |
565 | ||
c906108c | 566 | static int |
fba45db2 | 567 | get_number_trailer (char **pp, int trailer) |
c906108c | 568 | { |
5c44784c | 569 | int retval = 0; /* default */ |
c906108c SS |
570 | char *p = *pp; |
571 | ||
572 | if (p == NULL) | |
573 | /* Empty line means refer to the last breakpoint. */ | |
574 | return breakpoint_count; | |
575 | else if (*p == '$') | |
576 | { | |
577 | /* Make a copy of the name, so we can null-terminate it | |
c5aa993b | 578 | to pass to lookup_internalvar(). */ |
c906108c SS |
579 | char *varname; |
580 | char *start = ++p; | |
4fa62494 | 581 | LONGEST val; |
c906108c SS |
582 | |
583 | while (isalnum (*p) || *p == '_') | |
584 | p++; | |
585 | varname = (char *) alloca (p - start + 1); | |
586 | strncpy (varname, start, p - start); | |
587 | varname[p - start] = '\0'; | |
4fa62494 UW |
588 | if (get_internalvar_integer (lookup_internalvar (varname), &val)) |
589 | retval = (int) val; | |
5c44784c JM |
590 | else |
591 | { | |
3e43a32a MS |
592 | printf_filtered (_("Convenience variable must " |
593 | "have integer value.\n")); | |
5c44784c JM |
594 | retval = 0; |
595 | } | |
c906108c SS |
596 | } |
597 | else | |
598 | { | |
599 | if (*p == '-') | |
600 | ++p; | |
601 | while (*p >= '0' && *p <= '9') | |
602 | ++p; | |
603 | if (p == *pp) | |
604 | /* There is no number here. (e.g. "cond a == b"). */ | |
5c44784c | 605 | { |
4a64f543 | 606 | /* Skip non-numeric token. */ |
5c44784c JM |
607 | while (*p && !isspace((int) *p)) |
608 | ++p; | |
4a64f543 | 609 | /* Return zero, which caller must interpret as error. */ |
5c44784c JM |
610 | retval = 0; |
611 | } | |
612 | else | |
613 | retval = atoi (*pp); | |
614 | } | |
615 | if (!(isspace (*p) || *p == '\0' || *p == trailer)) | |
616 | { | |
4a64f543 | 617 | /* Trailing junk: return 0 and let caller print error msg. */ |
5c44784c JM |
618 | while (!(isspace (*p) || *p == '\0' || *p == trailer)) |
619 | ++p; | |
620 | retval = 0; | |
c906108c | 621 | } |
c906108c SS |
622 | while (isspace (*p)) |
623 | p++; | |
624 | *pp = p; | |
625 | return retval; | |
626 | } | |
5c44784c | 627 | |
11cf8741 | 628 | |
5c44784c JM |
629 | /* Like get_number_trailer, but don't allow a trailer. */ |
630 | int | |
fba45db2 | 631 | get_number (char **pp) |
5c44784c JM |
632 | { |
633 | return get_number_trailer (pp, '\0'); | |
634 | } | |
635 | ||
636 | /* Parse a number or a range. | |
4a64f543 MS |
637 | A number will be of the form handled by get_number. |
638 | A range will be of the form <number1> - <number2>, and | |
639 | will represent all the integers between number1 and number2, | |
640 | inclusive. | |
641 | ||
642 | While processing a range, this fuction is called iteratively; | |
643 | At each call it will return the next value in the range. | |
644 | ||
645 | At the beginning of parsing a range, the char pointer PP will | |
646 | be advanced past <number1> and left pointing at the '-' token. | |
647 | Subsequent calls will not advance the pointer until the range | |
648 | is completed. The call that completes the range will advance | |
649 | pointer PP past <number2>. */ | |
5c44784c JM |
650 | |
651 | int | |
fba45db2 | 652 | get_number_or_range (char **pp) |
5c44784c JM |
653 | { |
654 | static int last_retval, end_value; | |
655 | static char *end_ptr; | |
656 | static int in_range = 0; | |
657 | ||
658 | if (**pp != '-') | |
659 | { | |
660 | /* Default case: pp is pointing either to a solo number, | |
661 | or to the first number of a range. */ | |
662 | last_retval = get_number_trailer (pp, '-'); | |
663 | if (**pp == '-') | |
664 | { | |
665 | char **temp; | |
666 | ||
667 | /* This is the start of a range (<number1> - <number2>). | |
668 | Skip the '-', parse and remember the second number, | |
669 | and also remember the end of the final token. */ | |
670 | ||
671 | temp = &end_ptr; | |
672 | end_ptr = *pp + 1; | |
673 | while (isspace ((int) *end_ptr)) | |
674 | end_ptr++; /* skip white space */ | |
675 | end_value = get_number (temp); | |
676 | if (end_value < last_retval) | |
677 | { | |
8a3fe4f8 | 678 | error (_("inverted range")); |
5c44784c JM |
679 | } |
680 | else if (end_value == last_retval) | |
681 | { | |
4a64f543 | 682 | /* Degenerate range (number1 == number2). Advance the |
5c44784c JM |
683 | token pointer so that the range will be treated as a |
684 | single number. */ | |
685 | *pp = end_ptr; | |
686 | } | |
687 | else | |
688 | in_range = 1; | |
689 | } | |
690 | } | |
691 | else if (! in_range) | |
8a3fe4f8 | 692 | error (_("negative value")); |
5c44784c JM |
693 | else |
694 | { | |
695 | /* pp points to the '-' that betokens a range. All | |
696 | number-parsing has already been done. Return the next | |
697 | integer value (one greater than the saved previous value). | |
698 | Do not advance the token pointer 'pp' until the end of range | |
699 | is reached. */ | |
700 | ||
701 | if (++last_retval == end_value) | |
702 | { | |
703 | /* End of range reached; advance token pointer. */ | |
704 | *pp = end_ptr; | |
705 | in_range = 0; | |
706 | } | |
707 | } | |
708 | return last_retval; | |
709 | } | |
710 | ||
48cb2d85 VP |
711 | /* Return the breakpoint with the specified number, or NULL |
712 | if the number does not refer to an existing breakpoint. */ | |
713 | ||
714 | struct breakpoint * | |
715 | get_breakpoint (int num) | |
716 | { | |
717 | struct breakpoint *b; | |
718 | ||
719 | ALL_BREAKPOINTS (b) | |
720 | if (b->number == num) | |
721 | return b; | |
722 | ||
723 | return NULL; | |
724 | } | |
5c44784c | 725 | |
c906108c | 726 | \f |
adc36818 PM |
727 | |
728 | void | |
729 | set_breakpoint_condition (struct breakpoint *b, char *exp, | |
730 | int from_tty) | |
731 | { | |
732 | struct bp_location *loc = b->loc; | |
733 | ||
734 | for (; loc; loc = loc->next) | |
735 | { | |
736 | xfree (loc->cond); | |
737 | loc->cond = NULL; | |
738 | } | |
739 | xfree (b->cond_string); | |
740 | b->cond_string = NULL; | |
741 | xfree (b->cond_exp); | |
742 | b->cond_exp = NULL; | |
743 | ||
744 | if (*exp == 0) | |
745 | { | |
746 | if (from_tty) | |
747 | printf_filtered (_("Breakpoint %d now unconditional.\n"), b->number); | |
748 | } | |
749 | else | |
750 | { | |
751 | char *arg = exp; | |
cc59ec59 | 752 | |
adc36818 PM |
753 | /* I don't know if it matters whether this is the string the user |
754 | typed in or the decompiled expression. */ | |
755 | b->cond_string = xstrdup (arg); | |
756 | b->condition_not_parsed = 0; | |
757 | ||
758 | if (is_watchpoint (b)) | |
759 | { | |
760 | innermost_block = NULL; | |
761 | arg = exp; | |
762 | b->cond_exp = parse_exp_1 (&arg, 0, 0); | |
763 | if (*arg) | |
764 | error (_("Junk at end of expression")); | |
765 | b->cond_exp_valid_block = innermost_block; | |
766 | } | |
767 | else | |
768 | { | |
769 | for (loc = b->loc; loc; loc = loc->next) | |
770 | { | |
771 | arg = exp; | |
772 | loc->cond = | |
773 | parse_exp_1 (&arg, block_for_pc (loc->address), 0); | |
774 | if (*arg) | |
775 | error (_("Junk at end of expression")); | |
776 | } | |
777 | } | |
778 | } | |
779 | breakpoints_changed (); | |
780 | observer_notify_breakpoint_modified (b->number); | |
781 | } | |
782 | ||
c906108c SS |
783 | /* condition N EXP -- set break condition of breakpoint N to EXP. */ |
784 | ||
785 | static void | |
fba45db2 | 786 | condition_command (char *arg, int from_tty) |
c906108c | 787 | { |
52f0bd74 | 788 | struct breakpoint *b; |
c906108c | 789 | char *p; |
52f0bd74 | 790 | int bnum; |
c906108c SS |
791 | |
792 | if (arg == 0) | |
e2e0b3e5 | 793 | error_no_arg (_("breakpoint number")); |
c906108c SS |
794 | |
795 | p = arg; | |
796 | bnum = get_number (&p); | |
5c44784c | 797 | if (bnum == 0) |
8a3fe4f8 | 798 | error (_("Bad breakpoint argument: '%s'"), arg); |
c906108c SS |
799 | |
800 | ALL_BREAKPOINTS (b) | |
801 | if (b->number == bnum) | |
2f069f6f | 802 | { |
2566ad2d | 803 | set_breakpoint_condition (b, p, from_tty); |
2f069f6f JB |
804 | return; |
805 | } | |
c906108c | 806 | |
8a3fe4f8 | 807 | error (_("No breakpoint number %d."), bnum); |
c906108c SS |
808 | } |
809 | ||
a7bdde9e VP |
810 | /* Check that COMMAND do not contain commands that are suitable |
811 | only for tracepoints and not suitable for ordinary breakpoints. | |
4a64f543 MS |
812 | Throw if any such commands is found. */ |
813 | ||
a7bdde9e VP |
814 | static void |
815 | check_no_tracepoint_commands (struct command_line *commands) | |
816 | { | |
817 | struct command_line *c; | |
cc59ec59 | 818 | |
a7bdde9e VP |
819 | for (c = commands; c; c = c->next) |
820 | { | |
821 | int i; | |
822 | ||
823 | if (c->control_type == while_stepping_control) | |
3e43a32a MS |
824 | error (_("The 'while-stepping' command can " |
825 | "only be used for tracepoints")); | |
a7bdde9e VP |
826 | |
827 | for (i = 0; i < c->body_count; ++i) | |
828 | check_no_tracepoint_commands ((c->body_list)[i]); | |
829 | ||
830 | /* Not that command parsing removes leading whitespace and comment | |
4a64f543 | 831 | lines and also empty lines. So, we only need to check for |
a7bdde9e VP |
832 | command directly. */ |
833 | if (strstr (c->line, "collect ") == c->line) | |
834 | error (_("The 'collect' command can only be used for tracepoints")); | |
835 | ||
51661e93 VP |
836 | if (strstr (c->line, "teval ") == c->line) |
837 | error (_("The 'teval' command can only be used for tracepoints")); | |
a7bdde9e VP |
838 | } |
839 | } | |
840 | ||
d77f58be SS |
841 | /* Encapsulate tests for different types of tracepoints. */ |
842 | ||
a7bdde9e | 843 | int |
d77f58be | 844 | is_tracepoint (const struct breakpoint *b) |
a7bdde9e | 845 | { |
0fb4aa4b PA |
846 | return (b->type == bp_tracepoint |
847 | || b->type == bp_fast_tracepoint | |
848 | || b->type == bp_static_tracepoint); | |
a7bdde9e | 849 | } |
d77f58be | 850 | |
95a42b64 TT |
851 | /* A helper function that validsates that COMMANDS are valid for a |
852 | breakpoint. This function will throw an exception if a problem is | |
853 | found. */ | |
48cb2d85 | 854 | |
95a42b64 TT |
855 | static void |
856 | validate_commands_for_breakpoint (struct breakpoint *b, | |
857 | struct command_line *commands) | |
48cb2d85 | 858 | { |
d77f58be | 859 | if (is_tracepoint (b)) |
a7bdde9e | 860 | { |
4a64f543 MS |
861 | /* We need to verify that each top-level element of commands is |
862 | valid for tracepoints, that there's at most one | |
863 | while-stepping element, and that while-stepping's body has | |
864 | valid tracing commands excluding nested while-stepping. */ | |
a7bdde9e VP |
865 | struct command_line *c; |
866 | struct command_line *while_stepping = 0; | |
867 | for (c = commands; c; c = c->next) | |
868 | { | |
a7bdde9e VP |
869 | if (c->control_type == while_stepping_control) |
870 | { | |
871 | if (b->type == bp_fast_tracepoint) | |
3e43a32a MS |
872 | error (_("The 'while-stepping' command " |
873 | "cannot be used for fast tracepoint")); | |
0fb4aa4b | 874 | else if (b->type == bp_static_tracepoint) |
3e43a32a MS |
875 | error (_("The 'while-stepping' command " |
876 | "cannot be used for static tracepoint")); | |
a7bdde9e VP |
877 | |
878 | if (while_stepping) | |
3e43a32a MS |
879 | error (_("The 'while-stepping' command " |
880 | "can be used only once")); | |
a7bdde9e VP |
881 | else |
882 | while_stepping = c; | |
883 | } | |
884 | } | |
885 | if (while_stepping) | |
886 | { | |
887 | struct command_line *c2; | |
888 | ||
889 | gdb_assert (while_stepping->body_count == 1); | |
890 | c2 = while_stepping->body_list[0]; | |
891 | for (; c2; c2 = c2->next) | |
892 | { | |
a7bdde9e VP |
893 | if (c2->control_type == while_stepping_control) |
894 | error (_("The 'while-stepping' command cannot be nested")); | |
895 | } | |
896 | } | |
897 | } | |
898 | else | |
899 | { | |
900 | check_no_tracepoint_commands (commands); | |
901 | } | |
95a42b64 TT |
902 | } |
903 | ||
0fb4aa4b PA |
904 | /* Return a vector of all the static tracepoints set at ADDR. The |
905 | caller is responsible for releasing the vector. */ | |
906 | ||
907 | VEC(breakpoint_p) * | |
908 | static_tracepoints_here (CORE_ADDR addr) | |
909 | { | |
910 | struct breakpoint *b; | |
911 | VEC(breakpoint_p) *found = 0; | |
912 | struct bp_location *loc; | |
913 | ||
914 | ALL_BREAKPOINTS (b) | |
915 | if (b->type == bp_static_tracepoint) | |
916 | { | |
917 | for (loc = b->loc; loc; loc = loc->next) | |
918 | if (loc->address == addr) | |
919 | VEC_safe_push(breakpoint_p, found, b); | |
920 | } | |
921 | ||
922 | return found; | |
923 | } | |
924 | ||
95a42b64 | 925 | /* Set the command list of B to COMMANDS. If breakpoint is tracepoint, |
4a64f543 | 926 | validate that only allowed commands are included. */ |
95a42b64 TT |
927 | |
928 | void | |
4a64f543 MS |
929 | breakpoint_set_commands (struct breakpoint *b, |
930 | struct command_line *commands) | |
95a42b64 TT |
931 | { |
932 | validate_commands_for_breakpoint (b, commands); | |
a7bdde9e | 933 | |
9add0f1b TT |
934 | decref_counted_command_line (&b->commands); |
935 | b->commands = alloc_counted_command_line (commands); | |
48cb2d85 VP |
936 | breakpoints_changed (); |
937 | observer_notify_breakpoint_modified (b->number); | |
938 | } | |
939 | ||
95a42b64 TT |
940 | void |
941 | check_tracepoint_command (char *line, void *closure) | |
a7bdde9e VP |
942 | { |
943 | struct breakpoint *b = closure; | |
cc59ec59 | 944 | |
a7bdde9e VP |
945 | validate_actionline (&line, b); |
946 | } | |
947 | ||
95a42b64 TT |
948 | /* A structure used to pass information through |
949 | map_breakpoint_numbers. */ | |
950 | ||
951 | struct commands_info | |
952 | { | |
953 | /* True if the command was typed at a tty. */ | |
954 | int from_tty; | |
86b17b60 PA |
955 | |
956 | /* The breakpoint range spec. */ | |
957 | char *arg; | |
958 | ||
95a42b64 TT |
959 | /* Non-NULL if the body of the commands are being read from this |
960 | already-parsed command. */ | |
961 | struct command_line *control; | |
86b17b60 | 962 | |
95a42b64 TT |
963 | /* The command lines read from the user, or NULL if they have not |
964 | yet been read. */ | |
965 | struct counted_command_line *cmd; | |
966 | }; | |
967 | ||
968 | /* A callback for map_breakpoint_numbers that sets the commands for | |
969 | commands_command. */ | |
970 | ||
c906108c | 971 | static void |
95a42b64 | 972 | do_map_commands_command (struct breakpoint *b, void *data) |
c906108c | 973 | { |
95a42b64 | 974 | struct commands_info *info = data; |
c906108c | 975 | |
95a42b64 TT |
976 | if (info->cmd == NULL) |
977 | { | |
978 | struct command_line *l; | |
5c44784c | 979 | |
95a42b64 TT |
980 | if (info->control != NULL) |
981 | l = copy_command_lines (info->control->body_list[0]); | |
982 | else | |
86b17b60 PA |
983 | { |
984 | struct cleanup *old_chain; | |
985 | char *str; | |
c5aa993b | 986 | |
3e43a32a MS |
987 | str = xstrprintf (_("Type commands for breakpoint(s) " |
988 | "%s, one per line."), | |
86b17b60 PA |
989 | info->arg); |
990 | ||
991 | old_chain = make_cleanup (xfree, str); | |
992 | ||
993 | l = read_command_lines (str, | |
994 | info->from_tty, 1, | |
d77f58be | 995 | (is_tracepoint (b) |
86b17b60 PA |
996 | ? check_tracepoint_command : 0), |
997 | b); | |
998 | ||
999 | do_cleanups (old_chain); | |
1000 | } | |
a7bdde9e | 1001 | |
95a42b64 TT |
1002 | info->cmd = alloc_counted_command_line (l); |
1003 | } | |
1004 | ||
1005 | /* If a breakpoint was on the list more than once, we don't need to | |
1006 | do anything. */ | |
1007 | if (b->commands != info->cmd) | |
1008 | { | |
1009 | validate_commands_for_breakpoint (b, info->cmd->commands); | |
1010 | incref_counted_command_line (info->cmd); | |
1011 | decref_counted_command_line (&b->commands); | |
1012 | b->commands = info->cmd; | |
1013 | breakpoints_changed (); | |
1014 | observer_notify_breakpoint_modified (b->number); | |
c5aa993b | 1015 | } |
95a42b64 TT |
1016 | } |
1017 | ||
1018 | static void | |
4a64f543 MS |
1019 | commands_command_1 (char *arg, int from_tty, |
1020 | struct command_line *control) | |
95a42b64 TT |
1021 | { |
1022 | struct cleanup *cleanups; | |
1023 | struct commands_info info; | |
1024 | ||
1025 | info.from_tty = from_tty; | |
1026 | info.control = control; | |
1027 | info.cmd = NULL; | |
1028 | /* If we read command lines from the user, then `info' will hold an | |
1029 | extra reference to the commands that we must clean up. */ | |
1030 | cleanups = make_cleanup_decref_counted_command_line (&info.cmd); | |
1031 | ||
1032 | if (arg == NULL || !*arg) | |
1033 | { | |
86b17b60 | 1034 | if (breakpoint_count - prev_breakpoint_count > 1) |
4a64f543 MS |
1035 | arg = xstrprintf ("%d-%d", prev_breakpoint_count + 1, |
1036 | breakpoint_count); | |
95a42b64 TT |
1037 | else if (breakpoint_count > 0) |
1038 | arg = xstrprintf ("%d", breakpoint_count); | |
86b17b60 PA |
1039 | else |
1040 | { | |
1041 | /* So that we don't try to free the incoming non-NULL | |
1042 | argument in the cleanup below. Mapping breakpoint | |
1043 | numbers will fail in this case. */ | |
1044 | arg = NULL; | |
1045 | } | |
95a42b64 | 1046 | } |
9766ced4 SS |
1047 | else |
1048 | /* The command loop has some static state, so we need to preserve | |
1049 | our argument. */ | |
1050 | arg = xstrdup (arg); | |
86b17b60 PA |
1051 | |
1052 | if (arg != NULL) | |
1053 | make_cleanup (xfree, arg); | |
1054 | ||
1055 | info.arg = arg; | |
95a42b64 TT |
1056 | |
1057 | map_breakpoint_numbers (arg, do_map_commands_command, &info); | |
1058 | ||
1059 | if (info.cmd == NULL) | |
1060 | error (_("No breakpoints specified.")); | |
1061 | ||
1062 | do_cleanups (cleanups); | |
1063 | } | |
1064 | ||
1065 | static void | |
1066 | commands_command (char *arg, int from_tty) | |
1067 | { | |
1068 | commands_command_1 (arg, from_tty, NULL); | |
c906108c | 1069 | } |
40c03ae8 EZ |
1070 | |
1071 | /* Like commands_command, but instead of reading the commands from | |
1072 | input stream, takes them from an already parsed command structure. | |
1073 | ||
1074 | This is used by cli-script.c to DTRT with breakpoint commands | |
1075 | that are part of if and while bodies. */ | |
1076 | enum command_control_type | |
1077 | commands_from_control_command (char *arg, struct command_line *cmd) | |
1078 | { | |
95a42b64 TT |
1079 | commands_command_1 (arg, 0, cmd); |
1080 | return simple_control; | |
40c03ae8 | 1081 | } |
876fa593 JK |
1082 | |
1083 | /* Return non-zero if BL->TARGET_INFO contains valid information. */ | |
1084 | ||
1085 | static int | |
1086 | bp_location_has_shadow (struct bp_location *bl) | |
1087 | { | |
1088 | if (bl->loc_type != bp_loc_software_breakpoint) | |
1089 | return 0; | |
1090 | if (!bl->inserted) | |
1091 | return 0; | |
1092 | if (bl->target_info.shadow_len == 0) | |
1093 | /* bp isn't valid, or doesn't shadow memory. */ | |
1094 | return 0; | |
1095 | return 1; | |
1096 | } | |
1097 | ||
8defab1a | 1098 | /* Update BUF, which is LEN bytes read from the target address MEMADDR, |
876fa593 JK |
1099 | by replacing any memory breakpoints with their shadowed contents. |
1100 | ||
1101 | The range of shadowed area by each bp_location is: | |
35df4500 TJB |
1102 | bl->address - bp_location_placed_address_before_address_max |
1103 | up to bl->address + bp_location_shadow_len_after_address_max | |
876fa593 JK |
1104 | The range we were requested to resolve shadows for is: |
1105 | memaddr ... memaddr + len | |
1106 | Thus the safe cutoff boundaries for performance optimization are | |
35df4500 TJB |
1107 | memaddr + len <= (bl->address |
1108 | - bp_location_placed_address_before_address_max) | |
876fa593 | 1109 | and: |
35df4500 | 1110 | bl->address + bp_location_shadow_len_after_address_max <= memaddr */ |
c906108c | 1111 | |
8defab1a DJ |
1112 | void |
1113 | breakpoint_restore_shadows (gdb_byte *buf, ULONGEST memaddr, LONGEST len) | |
c906108c | 1114 | { |
4a64f543 MS |
1115 | /* Left boundary, right boundary and median element of our binary |
1116 | search. */ | |
876fa593 JK |
1117 | unsigned bc_l, bc_r, bc; |
1118 | ||
4a64f543 MS |
1119 | /* Find BC_L which is a leftmost element which may affect BUF |
1120 | content. It is safe to report lower value but a failure to | |
1121 | report higher one. */ | |
876fa593 JK |
1122 | |
1123 | bc_l = 0; | |
1124 | bc_r = bp_location_count; | |
1125 | while (bc_l + 1 < bc_r) | |
1126 | { | |
35df4500 | 1127 | struct bp_location *bl; |
876fa593 JK |
1128 | |
1129 | bc = (bc_l + bc_r) / 2; | |
35df4500 | 1130 | bl = bp_location[bc]; |
876fa593 | 1131 | |
4a64f543 MS |
1132 | /* Check first BL->ADDRESS will not overflow due to the added |
1133 | constant. Then advance the left boundary only if we are sure | |
1134 | the BC element can in no way affect the BUF content (MEMADDR | |
1135 | to MEMADDR + LEN range). | |
876fa593 | 1136 | |
4a64f543 MS |
1137 | Use the BP_LOCATION_SHADOW_LEN_AFTER_ADDRESS_MAX safety |
1138 | offset so that we cannot miss a breakpoint with its shadow | |
1139 | range tail still reaching MEMADDR. */ | |
c5aa993b | 1140 | |
35df4500 TJB |
1141 | if ((bl->address + bp_location_shadow_len_after_address_max |
1142 | >= bl->address) | |
1143 | && (bl->address + bp_location_shadow_len_after_address_max | |
1144 | <= memaddr)) | |
876fa593 JK |
1145 | bc_l = bc; |
1146 | else | |
1147 | bc_r = bc; | |
1148 | } | |
1149 | ||
128070bb PA |
1150 | /* Due to the binary search above, we need to make sure we pick the |
1151 | first location that's at BC_L's address. E.g., if there are | |
1152 | multiple locations at the same address, BC_L may end up pointing | |
1153 | at a duplicate location, and miss the "master"/"inserted" | |
1154 | location. Say, given locations L1, L2 and L3 at addresses A and | |
1155 | B: | |
1156 | ||
1157 | L1@A, L2@A, L3@B, ... | |
1158 | ||
1159 | BC_L could end up pointing at location L2, while the "master" | |
1160 | location could be L1. Since the `loc->inserted' flag is only set | |
1161 | on "master" locations, we'd forget to restore the shadow of L1 | |
1162 | and L2. */ | |
1163 | while (bc_l > 0 | |
1164 | && bp_location[bc_l]->address == bp_location[bc_l - 1]->address) | |
1165 | bc_l--; | |
1166 | ||
876fa593 JK |
1167 | /* Now do full processing of the found relevant range of elements. */ |
1168 | ||
1169 | for (bc = bc_l; bc < bp_location_count; bc++) | |
c5aa993b | 1170 | { |
35df4500 | 1171 | struct bp_location *bl = bp_location[bc]; |
876fa593 JK |
1172 | CORE_ADDR bp_addr = 0; |
1173 | int bp_size = 0; | |
1174 | int bptoffset = 0; | |
1175 | ||
35df4500 TJB |
1176 | /* bp_location array has BL->OWNER always non-NULL. */ |
1177 | if (bl->owner->type == bp_none) | |
8a3fe4f8 | 1178 | warning (_("reading through apparently deleted breakpoint #%d?"), |
35df4500 | 1179 | bl->owner->number); |
ffce0d52 | 1180 | |
876fa593 JK |
1181 | /* Performance optimization: any futher element can no longer affect BUF |
1182 | content. */ | |
1183 | ||
35df4500 TJB |
1184 | if (bl->address >= bp_location_placed_address_before_address_max |
1185 | && memaddr + len <= (bl->address | |
1186 | - bp_location_placed_address_before_address_max)) | |
876fa593 JK |
1187 | break; |
1188 | ||
35df4500 | 1189 | if (!bp_location_has_shadow (bl)) |
c5aa993b | 1190 | continue; |
35df4500 | 1191 | if (!breakpoint_address_match (bl->target_info.placed_address_space, 0, |
6c95b8df PA |
1192 | current_program_space->aspace, 0)) |
1193 | continue; | |
1194 | ||
c5aa993b JM |
1195 | /* Addresses and length of the part of the breakpoint that |
1196 | we need to copy. */ | |
35df4500 TJB |
1197 | bp_addr = bl->target_info.placed_address; |
1198 | bp_size = bl->target_info.shadow_len; | |
8defab1a | 1199 | |
c5aa993b JM |
1200 | if (bp_addr + bp_size <= memaddr) |
1201 | /* The breakpoint is entirely before the chunk of memory we | |
1202 | are reading. */ | |
1203 | continue; | |
8defab1a | 1204 | |
c5aa993b JM |
1205 | if (bp_addr >= memaddr + len) |
1206 | /* The breakpoint is entirely after the chunk of memory we are | |
4a64f543 | 1207 | reading. */ |
c5aa993b | 1208 | continue; |
c5aa993b | 1209 | |
8defab1a DJ |
1210 | /* Offset within shadow_contents. */ |
1211 | if (bp_addr < memaddr) | |
1212 | { | |
1213 | /* Only copy the second part of the breakpoint. */ | |
1214 | bp_size -= memaddr - bp_addr; | |
1215 | bptoffset = memaddr - bp_addr; | |
1216 | bp_addr = memaddr; | |
1217 | } | |
c5aa993b | 1218 | |
8defab1a DJ |
1219 | if (bp_addr + bp_size > memaddr + len) |
1220 | { | |
1221 | /* Only copy the first part of the breakpoint. */ | |
1222 | bp_size -= (bp_addr + bp_size) - (memaddr + len); | |
1223 | } | |
c5aa993b | 1224 | |
8defab1a | 1225 | memcpy (buf + bp_addr - memaddr, |
35df4500 | 1226 | bl->target_info.shadow_contents + bptoffset, bp_size); |
c5aa993b | 1227 | } |
c906108c | 1228 | } |
c906108c | 1229 | \f |
c5aa993b | 1230 | |
687595f9 | 1231 | /* A wrapper function for inserting catchpoints. */ |
9cbc821d | 1232 | static void |
687595f9 DJ |
1233 | insert_catchpoint (struct ui_out *uo, void *args) |
1234 | { | |
1235 | struct breakpoint *b = (struct breakpoint *) args; | |
687595f9 | 1236 | |
fe798b75 JB |
1237 | gdb_assert (b->type == bp_catchpoint); |
1238 | gdb_assert (b->ops != NULL && b->ops->insert != NULL); | |
1239 | ||
1240 | b->ops->insert (b); | |
687595f9 DJ |
1241 | } |
1242 | ||
60e1c644 PA |
1243 | /* Return true if BPT is of any hardware watchpoint kind. */ |
1244 | ||
a5606eee | 1245 | static int |
d77f58be | 1246 | is_hardware_watchpoint (const struct breakpoint *bpt) |
a5606eee VP |
1247 | { |
1248 | return (bpt->type == bp_hardware_watchpoint | |
1249 | || bpt->type == bp_read_watchpoint | |
1250 | || bpt->type == bp_access_watchpoint); | |
1251 | } | |
7270d8f2 | 1252 | |
60e1c644 PA |
1253 | /* Return true if BPT is of any watchpoint kind, hardware or |
1254 | software. */ | |
1255 | ||
1256 | static int | |
d77f58be | 1257 | is_watchpoint (const struct breakpoint *bpt) |
60e1c644 PA |
1258 | { |
1259 | return (is_hardware_watchpoint (bpt) | |
1260 | || bpt->type == bp_watchpoint); | |
1261 | } | |
1262 | ||
f6bc2008 PA |
1263 | /* Assuming that B is a watchpoint: returns true if the current thread |
1264 | and its running state are safe to evaluate or update watchpoint B. | |
1265 | Watchpoints on local expressions need to be evaluated in the | |
1266 | context of the thread that was current when the watchpoint was | |
1267 | created, and, that thread needs to be stopped to be able to select | |
1268 | the correct frame context. Watchpoints on global expressions can | |
1269 | be evaluated on any thread, and in any state. It is presently left | |
1270 | to the target allowing memory accesses when threads are | |
1271 | running. */ | |
1272 | ||
1273 | static int | |
1274 | watchpoint_in_thread_scope (struct breakpoint *b) | |
1275 | { | |
1276 | return (ptid_equal (b->watchpoint_thread, null_ptid) | |
1277 | || (ptid_equal (inferior_ptid, b->watchpoint_thread) | |
1278 | && !is_executing (inferior_ptid))); | |
1279 | } | |
1280 | ||
567e1b4e JB |
1281 | /* Assuming that B is a watchpoint: |
1282 | - Reparse watchpoint expression, if REPARSE is non-zero | |
a5606eee | 1283 | - Evaluate expression and store the result in B->val |
567e1b4e JB |
1284 | - Evaluate the condition if there is one, and store the result |
1285 | in b->loc->cond. | |
a5606eee VP |
1286 | - Update the list of values that must be watched in B->loc. |
1287 | ||
4a64f543 MS |
1288 | If the watchpoint disposition is disp_del_at_next_stop, then do |
1289 | nothing. If this is local watchpoint that is out of scope, delete | |
1290 | it. | |
1291 | ||
1292 | Even with `set breakpoint always-inserted on' the watchpoints are | |
1293 | removed + inserted on each stop here. Normal breakpoints must | |
1294 | never be removed because they might be missed by a running thread | |
1295 | when debugging in non-stop mode. On the other hand, hardware | |
1296 | watchpoints (is_hardware_watchpoint; processed here) are specific | |
1297 | to each LWP since they are stored in each LWP's hardware debug | |
1298 | registers. Therefore, such LWP must be stopped first in order to | |
1299 | be able to modify its hardware watchpoints. | |
1300 | ||
1301 | Hardware watchpoints must be reset exactly once after being | |
1302 | presented to the user. It cannot be done sooner, because it would | |
1303 | reset the data used to present the watchpoint hit to the user. And | |
1304 | it must not be done later because it could display the same single | |
1305 | watchpoint hit during multiple GDB stops. Note that the latter is | |
1306 | relevant only to the hardware watchpoint types bp_read_watchpoint | |
1307 | and bp_access_watchpoint. False hit by bp_hardware_watchpoint is | |
1308 | not user-visible - its hit is suppressed if the memory content has | |
1309 | not changed. | |
1310 | ||
1311 | The following constraints influence the location where we can reset | |
1312 | hardware watchpoints: | |
1313 | ||
1314 | * target_stopped_by_watchpoint and target_stopped_data_address are | |
1315 | called several times when GDB stops. | |
1316 | ||
1317 | [linux] | |
1318 | * Multiple hardware watchpoints can be hit at the same time, | |
1319 | causing GDB to stop. GDB only presents one hardware watchpoint | |
1320 | hit at a time as the reason for stopping, and all the other hits | |
1321 | are presented later, one after the other, each time the user | |
1322 | requests the execution to be resumed. Execution is not resumed | |
1323 | for the threads still having pending hit event stored in | |
1324 | LWP_INFO->STATUS. While the watchpoint is already removed from | |
1325 | the inferior on the first stop the thread hit event is kept being | |
1326 | reported from its cached value by linux_nat_stopped_data_address | |
1327 | until the real thread resume happens after the watchpoint gets | |
1328 | presented and thus its LWP_INFO->STATUS gets reset. | |
1329 | ||
1330 | Therefore the hardware watchpoint hit can get safely reset on the | |
1331 | watchpoint removal from inferior. */ | |
a79d3c27 | 1332 | |
b40ce68a | 1333 | static void |
a5606eee | 1334 | update_watchpoint (struct breakpoint *b, int reparse) |
7270d8f2 | 1335 | { |
a5606eee | 1336 | int within_current_scope; |
a5606eee | 1337 | struct frame_id saved_frame_id; |
66076460 | 1338 | int frame_saved; |
a5606eee | 1339 | |
f6bc2008 PA |
1340 | /* If this is a local watchpoint, we only want to check if the |
1341 | watchpoint frame is in scope if the current thread is the thread | |
1342 | that was used to create the watchpoint. */ | |
1343 | if (!watchpoint_in_thread_scope (b)) | |
1344 | return; | |
1345 | ||
4a64f543 MS |
1346 | /* We don't free locations. They are stored in bp_location array |
1347 | and update_global_locations will eventually delete them and | |
1348 | remove breakpoints if needed. */ | |
a5606eee VP |
1349 | b->loc = NULL; |
1350 | ||
1351 | if (b->disposition == disp_del_at_next_stop) | |
1352 | return; | |
1353 | ||
66076460 | 1354 | frame_saved = 0; |
a5606eee VP |
1355 | |
1356 | /* Determine if the watchpoint is within scope. */ | |
1357 | if (b->exp_valid_block == NULL) | |
1358 | within_current_scope = 1; | |
1359 | else | |
1360 | { | |
1361 | struct frame_info *fi; | |
66076460 DJ |
1362 | |
1363 | /* Save the current frame's ID so we can restore it after | |
1364 | evaluating the watchpoint expression on its own frame. */ | |
1365 | /* FIXME drow/2003-09-09: It would be nice if evaluate_expression | |
1366 | took a frame parameter, so that we didn't have to change the | |
1367 | selected frame. */ | |
1368 | frame_saved = 1; | |
1369 | saved_frame_id = get_frame_id (get_selected_frame (NULL)); | |
1370 | ||
a5606eee VP |
1371 | fi = frame_find_by_id (b->watchpoint_frame); |
1372 | within_current_scope = (fi != NULL); | |
1373 | if (within_current_scope) | |
1374 | select_frame (fi); | |
1375 | } | |
1376 | ||
1377 | if (within_current_scope && reparse) | |
1378 | { | |
1379 | char *s; | |
d63d0675 | 1380 | |
a5606eee VP |
1381 | if (b->exp) |
1382 | { | |
1383 | xfree (b->exp); | |
1384 | b->exp = NULL; | |
1385 | } | |
d63d0675 | 1386 | s = b->exp_string_reparse ? b->exp_string_reparse : b->exp_string; |
a5606eee VP |
1387 | b->exp = parse_exp_1 (&s, b->exp_valid_block, 0); |
1388 | /* If the meaning of expression itself changed, the old value is | |
1389 | no longer relevant. We don't want to report a watchpoint hit | |
1390 | to the user when the old value and the new value may actually | |
1391 | be completely different objects. */ | |
1392 | value_free (b->val); | |
fa4727a6 DJ |
1393 | b->val = NULL; |
1394 | b->val_valid = 0; | |
60e1c644 PA |
1395 | |
1396 | /* Note that unlike with breakpoints, the watchpoint's condition | |
1397 | expression is stored in the breakpoint object, not in the | |
1398 | locations (re)created below. */ | |
1399 | if (b->cond_string != NULL) | |
1400 | { | |
1401 | if (b->cond_exp != NULL) | |
1402 | { | |
1403 | xfree (b->cond_exp); | |
1404 | b->cond_exp = NULL; | |
1405 | } | |
1406 | ||
1407 | s = b->cond_string; | |
1408 | b->cond_exp = parse_exp_1 (&s, b->cond_exp_valid_block, 0); | |
1409 | } | |
a5606eee | 1410 | } |
a5606eee VP |
1411 | |
1412 | /* If we failed to parse the expression, for example because | |
1413 | it refers to a global variable in a not-yet-loaded shared library, | |
1414 | don't try to insert watchpoint. We don't automatically delete | |
1415 | such watchpoint, though, since failure to parse expression | |
1416 | is different from out-of-scope watchpoint. */ | |
2d134ed3 PA |
1417 | if ( !target_has_execution) |
1418 | { | |
1419 | /* Without execution, memory can't change. No use to try and | |
1420 | set watchpoint locations. The watchpoint will be reset when | |
1421 | the target gains execution, through breakpoint_re_set. */ | |
1422 | } | |
1423 | else if (within_current_scope && b->exp) | |
a5606eee | 1424 | { |
0cf6dd15 | 1425 | int pc = 0; |
fa4727a6 | 1426 | struct value *val_chain, *v, *result, *next; |
2d134ed3 | 1427 | struct program_space *frame_pspace; |
a5606eee | 1428 | |
0cf6dd15 | 1429 | fetch_subexp_value (b->exp, &pc, &v, &result, &val_chain); |
a5606eee | 1430 | |
a5606eee VP |
1431 | /* Avoid setting b->val if it's already set. The meaning of |
1432 | b->val is 'the last value' user saw, and we should update | |
1433 | it only if we reported that last value to user. As it | |
1434 | happens, the code that reports it updates b->val directly. */ | |
fa4727a6 DJ |
1435 | if (!b->val_valid) |
1436 | { | |
1437 | b->val = v; | |
1438 | b->val_valid = 1; | |
1439 | } | |
a5606eee | 1440 | |
4a64f543 MS |
1441 | /* Change the type of breakpoint between hardware assisted or |
1442 | an ordinary watchpoint depending on the hardware support | |
1443 | and free hardware slots. REPARSE is set when the inferior | |
1444 | is started. */ | |
db2ad4c3 JK |
1445 | if ((b->type == bp_watchpoint || b->type == bp_hardware_watchpoint) |
1446 | && reparse) | |
1447 | { | |
ca2d49e8 | 1448 | int i, mem_cnt, other_type_used; |
db2ad4c3 | 1449 | |
4a64f543 MS |
1450 | /* We need to determine how many resources are already |
1451 | used for all other hardware watchpoints to see if we | |
1452 | still have enough resources to also fit this watchpoint | |
1453 | in as well. To avoid the hw_watchpoint_used_count call | |
1454 | below from counting this watchpoint, make sure that it | |
1455 | is marked as a software watchpoint. */ | |
7b838ca2 | 1456 | b->type = bp_watchpoint; |
db2ad4c3 JK |
1457 | i = hw_watchpoint_used_count (bp_hardware_watchpoint, |
1458 | &other_type_used); | |
1459 | mem_cnt = can_use_hardware_watchpoint (val_chain); | |
1460 | ||
ca2d49e8 | 1461 | if (!mem_cnt) |
db2ad4c3 JK |
1462 | b->type = bp_watchpoint; |
1463 | else | |
ca2d49e8 | 1464 | { |
d92524f1 | 1465 | int target_resources_ok = target_can_use_hardware_watchpoint |
ca2d49e8 SL |
1466 | (bp_hardware_watchpoint, i + mem_cnt, other_type_used); |
1467 | if (target_resources_ok <= 0) | |
1468 | b->type = bp_watchpoint; | |
1469 | else | |
1470 | b->type = bp_hardware_watchpoint; | |
1471 | } | |
db2ad4c3 JK |
1472 | } |
1473 | ||
2d134ed3 PA |
1474 | frame_pspace = get_frame_program_space (get_selected_frame (NULL)); |
1475 | ||
a5606eee | 1476 | /* Look at each value on the value chain. */ |
fa4727a6 | 1477 | for (v = val_chain; v; v = next) |
a5606eee VP |
1478 | { |
1479 | /* If it's a memory location, and GDB actually needed | |
1480 | its contents to evaluate the expression, then we | |
fa4727a6 DJ |
1481 | must watch it. If the first value returned is |
1482 | still lazy, that means an error occurred reading it; | |
1483 | watch it anyway in case it becomes readable. */ | |
a5606eee | 1484 | if (VALUE_LVAL (v) == lval_memory |
fa4727a6 | 1485 | && (v == val_chain || ! value_lazy (v))) |
a5606eee VP |
1486 | { |
1487 | struct type *vtype = check_typedef (value_type (v)); | |
7270d8f2 | 1488 | |
a5606eee VP |
1489 | /* We only watch structs and arrays if user asked |
1490 | for it explicitly, never if they just happen to | |
1491 | appear in the middle of some value chain. */ | |
fa4727a6 | 1492 | if (v == result |
a5606eee VP |
1493 | || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT |
1494 | && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) | |
1495 | { | |
1496 | CORE_ADDR addr; | |
1497 | int len, type; | |
1498 | struct bp_location *loc, **tmp; | |
1499 | ||
42ae5230 | 1500 | addr = value_address (v); |
a5606eee VP |
1501 | len = TYPE_LENGTH (value_type (v)); |
1502 | type = hw_write; | |
1503 | if (b->type == bp_read_watchpoint) | |
1504 | type = hw_read; | |
1505 | else if (b->type == bp_access_watchpoint) | |
1506 | type = hw_access; | |
1507 | ||
39d61571 | 1508 | loc = allocate_bp_location (b); |
a5606eee VP |
1509 | for (tmp = &(b->loc); *tmp != NULL; tmp = &((*tmp)->next)) |
1510 | ; | |
1511 | *tmp = loc; | |
a6d9a66e | 1512 | loc->gdbarch = get_type_arch (value_type (v)); |
6c95b8df PA |
1513 | |
1514 | loc->pspace = frame_pspace; | |
a5606eee VP |
1515 | loc->address = addr; |
1516 | loc->length = len; | |
1517 | loc->watchpoint_type = type; | |
1518 | } | |
1519 | } | |
1520 | ||
1521 | next = value_next (v); | |
1522 | if (v != b->val) | |
1523 | value_free (v); | |
1524 | } | |
1525 | ||
c7437ca6 PA |
1526 | /* If a software watchpoint is not watching any memory, then the |
1527 | above left it without any location set up. But, | |
1528 | bpstat_stop_status requires a location to be able to report | |
1529 | stops, so make sure there's at least a dummy one. */ | |
1530 | if (b->type == bp_watchpoint && b->loc == NULL) | |
1531 | { | |
1532 | b->loc = allocate_bp_location (b); | |
1533 | b->loc->pspace = frame_pspace; | |
1534 | b->loc->address = -1; | |
1535 | b->loc->length = -1; | |
1536 | b->loc->watchpoint_type = -1; | |
1537 | } | |
a5606eee VP |
1538 | } |
1539 | else if (!within_current_scope) | |
7270d8f2 | 1540 | { |
3e43a32a MS |
1541 | printf_filtered (_("Watchpoint %d deleted because " |
1542 | "the program has left the block\n" | |
1543 | "in which its expression is valid.\n"), | |
a5606eee VP |
1544 | b->number); |
1545 | if (b->related_breakpoint) | |
60e1c644 PA |
1546 | { |
1547 | b->related_breakpoint->disposition = disp_del_at_next_stop; | |
1548 | b->related_breakpoint->related_breakpoint = NULL; | |
1549 | b->related_breakpoint= NULL; | |
1550 | } | |
a5606eee | 1551 | b->disposition = disp_del_at_next_stop; |
7270d8f2 | 1552 | } |
a5606eee VP |
1553 | |
1554 | /* Restore the selected frame. */ | |
66076460 DJ |
1555 | if (frame_saved) |
1556 | select_frame (frame_find_by_id (saved_frame_id)); | |
7270d8f2 OF |
1557 | } |
1558 | ||
a5606eee | 1559 | |
74960c60 VP |
1560 | /* Returns 1 iff breakpoint location should be |
1561 | inserted in the inferior. */ | |
1562 | static int | |
35df4500 | 1563 | should_be_inserted (struct bp_location *bl) |
74960c60 | 1564 | { |
35df4500 | 1565 | if (bl->owner == NULL || !breakpoint_enabled (bl->owner)) |
74960c60 VP |
1566 | return 0; |
1567 | ||
35df4500 | 1568 | if (bl->owner->disposition == disp_del_at_next_stop) |
74960c60 VP |
1569 | return 0; |
1570 | ||
35df4500 | 1571 | if (!bl->enabled || bl->shlib_disabled || bl->duplicate) |
74960c60 VP |
1572 | return 0; |
1573 | ||
56710373 PA |
1574 | /* This is set for example, when we're attached to the parent of a |
1575 | vfork, and have detached from the child. The child is running | |
1576 | free, and we expect it to do an exec or exit, at which point the | |
1577 | OS makes the parent schedulable again (and the target reports | |
1578 | that the vfork is done). Until the child is done with the shared | |
1579 | memory region, do not insert breakpoints in the parent, otherwise | |
1580 | the child could still trip on the parent's breakpoints. Since | |
1581 | the parent is blocked anyway, it won't miss any breakpoint. */ | |
35df4500 | 1582 | if (bl->pspace->breakpoints_not_allowed) |
56710373 PA |
1583 | return 0; |
1584 | ||
1042e4c0 SS |
1585 | /* Tracepoints are inserted by the target at a time of its choosing, |
1586 | not by us. */ | |
35df4500 | 1587 | if (is_tracepoint (bl->owner)) |
1042e4c0 SS |
1588 | return 0; |
1589 | ||
74960c60 VP |
1590 | return 1; |
1591 | } | |
1592 | ||
35df4500 TJB |
1593 | /* Insert a low-level "breakpoint" of some type. BL is the breakpoint |
1594 | location. Any error messages are printed to TMP_ERROR_STREAM; and | |
1595 | DISABLED_BREAKS, and HW_BREAKPOINT_ERROR are used to report problems. | |
879bfdc2 | 1596 | |
4a64f543 MS |
1597 | NOTE drow/2003-09-09: This routine could be broken down to an |
1598 | object-style method for each breakpoint or catchpoint type. */ | |
26bb91f3 | 1599 | static int |
35df4500 | 1600 | insert_bp_location (struct bp_location *bl, |
26bb91f3 | 1601 | struct ui_file *tmp_error_stream, |
fa3a767f | 1602 | int *disabled_breaks, |
26bb91f3 | 1603 | int *hw_breakpoint_error) |
879bfdc2 DJ |
1604 | { |
1605 | int val = 0; | |
1606 | ||
35df4500 | 1607 | if (!should_be_inserted (bl) || bl->inserted) |
879bfdc2 DJ |
1608 | return 0; |
1609 | ||
8181d85f | 1610 | /* Initialize the target-specific information. */ |
35df4500 TJB |
1611 | memset (&bl->target_info, 0, sizeof (bl->target_info)); |
1612 | bl->target_info.placed_address = bl->address; | |
1613 | bl->target_info.placed_address_space = bl->pspace->aspace; | |
8181d85f | 1614 | |
35df4500 TJB |
1615 | if (bl->loc_type == bp_loc_software_breakpoint |
1616 | || bl->loc_type == bp_loc_hardware_breakpoint) | |
879bfdc2 | 1617 | { |
35df4500 | 1618 | if (bl->owner->type != bp_hardware_breakpoint) |
765dc015 VP |
1619 | { |
1620 | /* If the explicitly specified breakpoint type | |
1621 | is not hardware breakpoint, check the memory map to see | |
1622 | if the breakpoint address is in read only memory or not. | |
4a64f543 | 1623 | |
765dc015 VP |
1624 | Two important cases are: |
1625 | - location type is not hardware breakpoint, memory | |
1626 | is readonly. We change the type of the location to | |
1627 | hardware breakpoint. | |
4a64f543 MS |
1628 | - location type is hardware breakpoint, memory is |
1629 | read-write. This means we've previously made the | |
1630 | location hardware one, but then the memory map changed, | |
1631 | so we undo. | |
765dc015 | 1632 | |
4a64f543 MS |
1633 | When breakpoints are removed, remove_breakpoints will use |
1634 | location types we've just set here, the only possible | |
1635 | problem is that memory map has changed during running | |
1636 | program, but it's not going to work anyway with current | |
1637 | gdb. */ | |
765dc015 | 1638 | struct mem_region *mr |
35df4500 | 1639 | = lookup_mem_region (bl->target_info.placed_address); |
765dc015 VP |
1640 | |
1641 | if (mr) | |
1642 | { | |
1643 | if (automatic_hardware_breakpoints) | |
1644 | { | |
765dc015 VP |
1645 | enum bp_loc_type new_type; |
1646 | ||
1647 | if (mr->attrib.mode != MEM_RW) | |
1648 | new_type = bp_loc_hardware_breakpoint; | |
1649 | else | |
1650 | new_type = bp_loc_software_breakpoint; | |
1651 | ||
35df4500 | 1652 | if (new_type != bl->loc_type) |
765dc015 VP |
1653 | { |
1654 | static int said = 0; | |
cc59ec59 | 1655 | |
35df4500 | 1656 | bl->loc_type = new_type; |
765dc015 VP |
1657 | if (!said) |
1658 | { | |
3e43a32a MS |
1659 | fprintf_filtered (gdb_stdout, |
1660 | _("Note: automatically using " | |
1661 | "hardware breakpoints for " | |
1662 | "read-only addresses.\n")); | |
765dc015 VP |
1663 | said = 1; |
1664 | } | |
1665 | } | |
1666 | } | |
35df4500 | 1667 | else if (bl->loc_type == bp_loc_software_breakpoint |
765dc015 | 1668 | && mr->attrib.mode != MEM_RW) |
3e43a32a MS |
1669 | warning (_("cannot set software breakpoint " |
1670 | "at readonly address %s"), | |
35df4500 | 1671 | paddress (bl->gdbarch, bl->address)); |
765dc015 VP |
1672 | } |
1673 | } | |
1674 | ||
879bfdc2 DJ |
1675 | /* First check to see if we have to handle an overlay. */ |
1676 | if (overlay_debugging == ovly_off | |
35df4500 TJB |
1677 | || bl->section == NULL |
1678 | || !(section_is_overlay (bl->section))) | |
879bfdc2 DJ |
1679 | { |
1680 | /* No overlay handling: just set the breakpoint. */ | |
1681 | ||
35df4500 TJB |
1682 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
1683 | val = target_insert_hw_breakpoint (bl->gdbarch, | |
1684 | &bl->target_info); | |
879bfdc2 | 1685 | else |
35df4500 TJB |
1686 | val = target_insert_breakpoint (bl->gdbarch, |
1687 | &bl->target_info); | |
879bfdc2 DJ |
1688 | } |
1689 | else | |
1690 | { | |
4a64f543 | 1691 | /* This breakpoint is in an overlay section. |
879bfdc2 DJ |
1692 | Shall we set a breakpoint at the LMA? */ |
1693 | if (!overlay_events_enabled) | |
1694 | { | |
1695 | /* Yes -- overlay event support is not active, | |
1696 | so we must try to set a breakpoint at the LMA. | |
1697 | This will not work for a hardware breakpoint. */ | |
35df4500 | 1698 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
8a3fe4f8 | 1699 | warning (_("hardware breakpoint %d not supported in overlay!"), |
35df4500 | 1700 | bl->owner->number); |
879bfdc2 DJ |
1701 | else |
1702 | { | |
35df4500 TJB |
1703 | CORE_ADDR addr = overlay_unmapped_address (bl->address, |
1704 | bl->section); | |
879bfdc2 | 1705 | /* Set a software (trap) breakpoint at the LMA. */ |
35df4500 TJB |
1706 | bl->overlay_target_info = bl->target_info; |
1707 | bl->overlay_target_info.placed_address = addr; | |
1708 | val = target_insert_breakpoint (bl->gdbarch, | |
1709 | &bl->overlay_target_info); | |
879bfdc2 | 1710 | if (val != 0) |
99361f52 | 1711 | fprintf_unfiltered (tmp_error_stream, |
3e43a32a MS |
1712 | "Overlay breakpoint %d " |
1713 | "failed: in ROM?\n", | |
35df4500 | 1714 | bl->owner->number); |
879bfdc2 DJ |
1715 | } |
1716 | } | |
1717 | /* Shall we set a breakpoint at the VMA? */ | |
35df4500 | 1718 | if (section_is_mapped (bl->section)) |
879bfdc2 DJ |
1719 | { |
1720 | /* Yes. This overlay section is mapped into memory. */ | |
35df4500 TJB |
1721 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
1722 | val = target_insert_hw_breakpoint (bl->gdbarch, | |
1723 | &bl->target_info); | |
879bfdc2 | 1724 | else |
35df4500 TJB |
1725 | val = target_insert_breakpoint (bl->gdbarch, |
1726 | &bl->target_info); | |
879bfdc2 DJ |
1727 | } |
1728 | else | |
1729 | { | |
1730 | /* No. This breakpoint will not be inserted. | |
1731 | No error, but do not mark the bp as 'inserted'. */ | |
1732 | return 0; | |
1733 | } | |
1734 | } | |
1735 | ||
1736 | if (val) | |
1737 | { | |
1738 | /* Can't set the breakpoint. */ | |
35df4500 | 1739 | if (solib_name_from_address (bl->pspace, bl->address)) |
879bfdc2 | 1740 | { |
4a64f543 | 1741 | /* See also: disable_breakpoints_in_shlibs. */ |
879bfdc2 | 1742 | val = 0; |
35df4500 | 1743 | bl->shlib_disabled = 1; |
879bfdc2 DJ |
1744 | if (!*disabled_breaks) |
1745 | { | |
1746 | fprintf_unfiltered (tmp_error_stream, | |
1747 | "Cannot insert breakpoint %d.\n", | |
35df4500 | 1748 | bl->owner->number); |
879bfdc2 | 1749 | fprintf_unfiltered (tmp_error_stream, |
3e43a32a MS |
1750 | "Temporarily disabling shared " |
1751 | "library breakpoints:\n"); | |
879bfdc2 DJ |
1752 | } |
1753 | *disabled_breaks = 1; | |
1754 | fprintf_unfiltered (tmp_error_stream, | |
35df4500 | 1755 | "breakpoint #%d\n", bl->owner->number); |
879bfdc2 DJ |
1756 | } |
1757 | else | |
879bfdc2 | 1758 | { |
35df4500 | 1759 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
879bfdc2 DJ |
1760 | { |
1761 | *hw_breakpoint_error = 1; | |
3e43a32a MS |
1762 | fprintf_unfiltered (tmp_error_stream, |
1763 | "Cannot insert hardware " | |
1764 | "breakpoint %d.\n", | |
35df4500 | 1765 | bl->owner->number); |
879bfdc2 DJ |
1766 | } |
1767 | else | |
1768 | { | |
1769 | fprintf_unfiltered (tmp_error_stream, | |
1770 | "Cannot insert breakpoint %d.\n", | |
35df4500 | 1771 | bl->owner->number); |
879bfdc2 DJ |
1772 | fprintf_filtered (tmp_error_stream, |
1773 | "Error accessing memory address "); | |
35df4500 | 1774 | fputs_filtered (paddress (bl->gdbarch, bl->address), |
5af949e3 | 1775 | tmp_error_stream); |
879bfdc2 DJ |
1776 | fprintf_filtered (tmp_error_stream, ": %s.\n", |
1777 | safe_strerror (val)); | |
1778 | } | |
1779 | ||
1780 | } | |
1781 | } | |
1782 | else | |
35df4500 | 1783 | bl->inserted = 1; |
879bfdc2 DJ |
1784 | |
1785 | return val; | |
1786 | } | |
1787 | ||
35df4500 | 1788 | else if (bl->loc_type == bp_loc_hardware_watchpoint |
879bfdc2 | 1789 | /* NOTE drow/2003-09-08: This state only exists for removing |
4a64f543 | 1790 | watchpoints. It's not clear that it's necessary... */ |
35df4500 | 1791 | && bl->owner->disposition != disp_del_at_next_stop) |
879bfdc2 | 1792 | { |
35df4500 TJB |
1793 | val = target_insert_watchpoint (bl->address, |
1794 | bl->length, | |
1795 | bl->watchpoint_type, | |
1796 | bl->owner->cond_exp); | |
85d721b8 PA |
1797 | |
1798 | /* If trying to set a read-watchpoint, and it turns out it's not | |
1799 | supported, try emulating one with an access watchpoint. */ | |
35df4500 | 1800 | if (val == 1 && bl->watchpoint_type == hw_read) |
85d721b8 PA |
1801 | { |
1802 | struct bp_location *loc, **loc_temp; | |
1803 | ||
1804 | /* But don't try to insert it, if there's already another | |
1805 | hw_access location that would be considered a duplicate | |
1806 | of this one. */ | |
1807 | ALL_BP_LOCATIONS (loc, loc_temp) | |
35df4500 | 1808 | if (loc != bl |
85d721b8 | 1809 | && loc->watchpoint_type == hw_access |
35df4500 | 1810 | && watchpoint_locations_match (bl, loc)) |
85d721b8 | 1811 | { |
35df4500 TJB |
1812 | bl->duplicate = 1; |
1813 | bl->inserted = 1; | |
1814 | bl->target_info = loc->target_info; | |
1815 | bl->watchpoint_type = hw_access; | |
85d721b8 PA |
1816 | val = 0; |
1817 | break; | |
1818 | } | |
1819 | ||
1820 | if (val == 1) | |
1821 | { | |
35df4500 TJB |
1822 | val = target_insert_watchpoint (bl->address, |
1823 | bl->length, | |
0cf6dd15 | 1824 | hw_access, |
35df4500 | 1825 | bl->owner->cond_exp); |
85d721b8 | 1826 | if (val == 0) |
35df4500 | 1827 | bl->watchpoint_type = hw_access; |
85d721b8 PA |
1828 | } |
1829 | } | |
1830 | ||
35df4500 | 1831 | bl->inserted = (val == 0); |
879bfdc2 DJ |
1832 | } |
1833 | ||
35df4500 | 1834 | else if (bl->owner->type == bp_catchpoint) |
879bfdc2 | 1835 | { |
71fff37b | 1836 | struct gdb_exception e = catch_exception (uiout, insert_catchpoint, |
35df4500 | 1837 | bl->owner, RETURN_MASK_ERROR); |
9cbc821d | 1838 | exception_fprintf (gdb_stderr, e, "warning: inserting catchpoint %d: ", |
35df4500 | 1839 | bl->owner->number); |
9cbc821d | 1840 | if (e.reason < 0) |
35df4500 | 1841 | bl->owner->enable_state = bp_disabled; |
879bfdc2 | 1842 | else |
35df4500 | 1843 | bl->inserted = 1; |
1640b821 DJ |
1844 | |
1845 | /* We've already printed an error message if there was a problem | |
1846 | inserting this catchpoint, and we've disabled the catchpoint, | |
1847 | so just return success. */ | |
1848 | return 0; | |
879bfdc2 DJ |
1849 | } |
1850 | ||
1851 | return 0; | |
1852 | } | |
1853 | ||
6c95b8df PA |
1854 | /* This function is called when program space PSPACE is about to be |
1855 | deleted. It takes care of updating breakpoints to not reference | |
1856 | PSPACE anymore. */ | |
1857 | ||
1858 | void | |
1859 | breakpoint_program_space_exit (struct program_space *pspace) | |
1860 | { | |
1861 | struct breakpoint *b, *b_temp; | |
876fa593 | 1862 | struct bp_location *loc, **loc_temp; |
6c95b8df PA |
1863 | |
1864 | /* Remove any breakpoint that was set through this program space. */ | |
1865 | ALL_BREAKPOINTS_SAFE (b, b_temp) | |
1866 | { | |
1867 | if (b->pspace == pspace) | |
1868 | delete_breakpoint (b); | |
1869 | } | |
1870 | ||
1871 | /* Breakpoints set through other program spaces could have locations | |
1872 | bound to PSPACE as well. Remove those. */ | |
876fa593 | 1873 | ALL_BP_LOCATIONS (loc, loc_temp) |
6c95b8df PA |
1874 | { |
1875 | struct bp_location *tmp; | |
1876 | ||
1877 | if (loc->pspace == pspace) | |
1878 | { | |
2bdf28a0 | 1879 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always non-NULL. */ |
6c95b8df PA |
1880 | if (loc->owner->loc == loc) |
1881 | loc->owner->loc = loc->next; | |
1882 | else | |
1883 | for (tmp = loc->owner->loc; tmp->next != NULL; tmp = tmp->next) | |
1884 | if (tmp->next == loc) | |
1885 | { | |
1886 | tmp->next = loc->next; | |
1887 | break; | |
1888 | } | |
1889 | } | |
1890 | } | |
1891 | ||
1892 | /* Now update the global location list to permanently delete the | |
1893 | removed locations above. */ | |
1894 | update_global_location_list (0); | |
1895 | } | |
1896 | ||
74960c60 VP |
1897 | /* Make sure all breakpoints are inserted in inferior. |
1898 | Throws exception on any error. | |
1899 | A breakpoint that is already inserted won't be inserted | |
1900 | again, so calling this function twice is safe. */ | |
1901 | void | |
1902 | insert_breakpoints (void) | |
1903 | { | |
1904 | struct breakpoint *bpt; | |
1905 | ||
1906 | ALL_BREAKPOINTS (bpt) | |
1907 | if (is_hardware_watchpoint (bpt)) | |
4a64f543 | 1908 | update_watchpoint (bpt, 0 /* don't reparse. */); |
74960c60 | 1909 | |
b60e7edf | 1910 | update_global_location_list (1); |
74960c60 | 1911 | |
c35b1492 PA |
1912 | /* update_global_location_list does not insert breakpoints when |
1913 | always_inserted_mode is not enabled. Explicitly insert them | |
1914 | now. */ | |
1915 | if (!breakpoints_always_inserted_mode ()) | |
74960c60 VP |
1916 | insert_breakpoint_locations (); |
1917 | } | |
1918 | ||
c906108c SS |
1919 | /* insert_breakpoints is used when starting or continuing the program. |
1920 | remove_breakpoints is used when the program stops. | |
1921 | Both return zero if successful, | |
1922 | or an `errno' value if could not write the inferior. */ | |
1923 | ||
74960c60 VP |
1924 | static void |
1925 | insert_breakpoint_locations (void) | |
c906108c | 1926 | { |
a5606eee | 1927 | struct breakpoint *bpt; |
35df4500 | 1928 | struct bp_location *bl, **blp_tmp; |
e236ba44 | 1929 | int error = 0; |
c906108c SS |
1930 | int val = 0; |
1931 | int disabled_breaks = 0; | |
81d0cc19 | 1932 | int hw_breakpoint_error = 0; |
c906108c | 1933 | |
81d0cc19 | 1934 | struct ui_file *tmp_error_stream = mem_fileopen (); |
f7545552 | 1935 | struct cleanup *cleanups = make_cleanup_ui_file_delete (tmp_error_stream); |
74960c60 | 1936 | |
81d0cc19 GS |
1937 | /* Explicitly mark the warning -- this will only be printed if |
1938 | there was an error. */ | |
1939 | fprintf_unfiltered (tmp_error_stream, "Warning:\n"); | |
6c95b8df PA |
1940 | |
1941 | save_current_space_and_thread (); | |
1942 | ||
35df4500 | 1943 | ALL_BP_LOCATIONS (bl, blp_tmp) |
879bfdc2 | 1944 | { |
35df4500 | 1945 | if (!should_be_inserted (bl) || bl->inserted) |
879bfdc2 DJ |
1946 | continue; |
1947 | ||
4a64f543 MS |
1948 | /* There is no point inserting thread-specific breakpoints if |
1949 | the thread no longer exists. ALL_BP_LOCATIONS bp_location | |
1950 | has BL->OWNER always non-NULL. */ | |
35df4500 TJB |
1951 | if (bl->owner->thread != -1 |
1952 | && !valid_thread_id (bl->owner->thread)) | |
f365de73 AS |
1953 | continue; |
1954 | ||
35df4500 | 1955 | switch_to_program_space_and_thread (bl->pspace); |
6c95b8df PA |
1956 | |
1957 | /* For targets that support global breakpoints, there's no need | |
1958 | to select an inferior to insert breakpoint to. In fact, even | |
1959 | if we aren't attached to any process yet, we should still | |
1960 | insert breakpoints. */ | |
1961 | if (!gdbarch_has_global_breakpoints (target_gdbarch) | |
1962 | && ptid_equal (inferior_ptid, null_ptid)) | |
1963 | continue; | |
1964 | ||
35df4500 | 1965 | val = insert_bp_location (bl, tmp_error_stream, &disabled_breaks, |
879bfdc2 DJ |
1966 | &hw_breakpoint_error); |
1967 | if (val) | |
e236ba44 | 1968 | error = val; |
879bfdc2 | 1969 | } |
c906108c | 1970 | |
4a64f543 MS |
1971 | /* If we failed to insert all locations of a watchpoint, remove |
1972 | them, as half-inserted watchpoint is of limited use. */ | |
a5606eee VP |
1973 | ALL_BREAKPOINTS (bpt) |
1974 | { | |
1975 | int some_failed = 0; | |
1976 | struct bp_location *loc; | |
1977 | ||
1978 | if (!is_hardware_watchpoint (bpt)) | |
1979 | continue; | |
1980 | ||
d6b74ac4 | 1981 | if (!breakpoint_enabled (bpt)) |
a5606eee | 1982 | continue; |
74960c60 VP |
1983 | |
1984 | if (bpt->disposition == disp_del_at_next_stop) | |
1985 | continue; | |
a5606eee VP |
1986 | |
1987 | for (loc = bpt->loc; loc; loc = loc->next) | |
56710373 | 1988 | if (!loc->inserted && should_be_inserted (loc)) |
a5606eee VP |
1989 | { |
1990 | some_failed = 1; | |
1991 | break; | |
1992 | } | |
1993 | if (some_failed) | |
1994 | { | |
1995 | for (loc = bpt->loc; loc; loc = loc->next) | |
1996 | if (loc->inserted) | |
1997 | remove_breakpoint (loc, mark_uninserted); | |
1998 | ||
1999 | hw_breakpoint_error = 1; | |
2000 | fprintf_unfiltered (tmp_error_stream, | |
2001 | "Could not insert hardware watchpoint %d.\n", | |
2002 | bpt->number); | |
2003 | error = -1; | |
2004 | } | |
2005 | } | |
2006 | ||
e236ba44 | 2007 | if (error) |
81d0cc19 GS |
2008 | { |
2009 | /* If a hardware breakpoint or watchpoint was inserted, add a | |
2010 | message about possibly exhausted resources. */ | |
879bfdc2 | 2011 | if (hw_breakpoint_error) |
81d0cc19 | 2012 | { |
c6510018 MS |
2013 | fprintf_unfiltered (tmp_error_stream, |
2014 | "Could not insert hardware breakpoints:\n\ | |
2015 | You may have requested too many hardware breakpoints/watchpoints.\n"); | |
81d0cc19 | 2016 | } |
81d0cc19 GS |
2017 | target_terminal_ours_for_output (); |
2018 | error_stream (tmp_error_stream); | |
2019 | } | |
f7545552 TT |
2020 | |
2021 | do_cleanups (cleanups); | |
c906108c SS |
2022 | } |
2023 | ||
c906108c | 2024 | int |
fba45db2 | 2025 | remove_breakpoints (void) |
c906108c | 2026 | { |
35df4500 | 2027 | struct bp_location *bl, **blp_tmp; |
3a1bae8e | 2028 | int val = 0; |
c906108c | 2029 | |
35df4500 | 2030 | ALL_BP_LOCATIONS (bl, blp_tmp) |
c5aa993b | 2031 | { |
35df4500 TJB |
2032 | if (bl->inserted) |
2033 | val |= remove_breakpoint (bl, mark_uninserted); | |
c5aa993b | 2034 | } |
3a1bae8e | 2035 | return val; |
c906108c SS |
2036 | } |
2037 | ||
6c95b8df PA |
2038 | /* Remove breakpoints of process PID. */ |
2039 | ||
2040 | int | |
2041 | remove_breakpoints_pid (int pid) | |
2042 | { | |
35df4500 | 2043 | struct bp_location *bl, **blp_tmp; |
6c95b8df PA |
2044 | int val; |
2045 | struct inferior *inf = find_inferior_pid (pid); | |
2046 | ||
35df4500 | 2047 | ALL_BP_LOCATIONS (bl, blp_tmp) |
6c95b8df | 2048 | { |
35df4500 | 2049 | if (bl->pspace != inf->pspace) |
6c95b8df PA |
2050 | continue; |
2051 | ||
35df4500 | 2052 | if (bl->inserted) |
6c95b8df | 2053 | { |
35df4500 | 2054 | val = remove_breakpoint (bl, mark_uninserted); |
6c95b8df PA |
2055 | if (val != 0) |
2056 | return val; | |
2057 | } | |
2058 | } | |
2059 | return 0; | |
2060 | } | |
2061 | ||
692590c1 | 2062 | int |
80ce1ecb | 2063 | remove_hw_watchpoints (void) |
692590c1 | 2064 | { |
35df4500 | 2065 | struct bp_location *bl, **blp_tmp; |
3a1bae8e | 2066 | int val = 0; |
692590c1 | 2067 | |
35df4500 | 2068 | ALL_BP_LOCATIONS (bl, blp_tmp) |
692590c1 | 2069 | { |
35df4500 TJB |
2070 | if (bl->inserted && bl->loc_type == bp_loc_hardware_watchpoint) |
2071 | val |= remove_breakpoint (bl, mark_uninserted); | |
692590c1 | 2072 | } |
3a1bae8e | 2073 | return val; |
692590c1 MS |
2074 | } |
2075 | ||
c906108c | 2076 | int |
fba45db2 | 2077 | reattach_breakpoints (int pid) |
c906108c | 2078 | { |
6c95b8df | 2079 | struct cleanup *old_chain; |
35df4500 | 2080 | struct bp_location *bl, **blp_tmp; |
c906108c | 2081 | int val; |
a4954f26 | 2082 | struct ui_file *tmp_error_stream = mem_fileopen (); |
fa3a767f | 2083 | int dummy1 = 0, dummy2 = 0; |
6c95b8df PA |
2084 | struct inferior *inf; |
2085 | struct thread_info *tp; | |
2086 | ||
2087 | tp = any_live_thread_of_process (pid); | |
2088 | if (tp == NULL) | |
2089 | return 1; | |
2090 | ||
2091 | inf = find_inferior_pid (pid); | |
2092 | old_chain = save_inferior_ptid (); | |
2093 | ||
2094 | inferior_ptid = tp->ptid; | |
a4954f26 DJ |
2095 | |
2096 | make_cleanup_ui_file_delete (tmp_error_stream); | |
c906108c | 2097 | |
35df4500 | 2098 | ALL_BP_LOCATIONS (bl, blp_tmp) |
c5aa993b | 2099 | { |
35df4500 | 2100 | if (bl->pspace != inf->pspace) |
6c95b8df PA |
2101 | continue; |
2102 | ||
35df4500 | 2103 | if (bl->inserted) |
c5aa993b | 2104 | { |
35df4500 TJB |
2105 | bl->inserted = 0; |
2106 | val = insert_bp_location (bl, tmp_error_stream, &dummy1, &dummy2); | |
c5aa993b JM |
2107 | if (val != 0) |
2108 | { | |
ce696e05 | 2109 | do_cleanups (old_chain); |
c5aa993b JM |
2110 | return val; |
2111 | } | |
2112 | } | |
2113 | } | |
ce696e05 | 2114 | do_cleanups (old_chain); |
c906108c SS |
2115 | return 0; |
2116 | } | |
2117 | ||
e58b0e63 PA |
2118 | static int internal_breakpoint_number = -1; |
2119 | ||
84f4c1fe PM |
2120 | /* Set the breakpoint number of B, depending on the value of INTERNAL. |
2121 | If INTERNAL is non-zero, the breakpoint number will be populated | |
2122 | from internal_breakpoint_number and that variable decremented. | |
2123 | Otherwis the breakpoint number will be populated from | |
2124 | breakpoint_count and that value incremented. Internal breakpoints | |
2125 | do not set the internal var bpnum. */ | |
2126 | static void | |
2127 | set_breakpoint_number (int internal, struct breakpoint *b) | |
2128 | { | |
2129 | if (internal) | |
2130 | b->number = internal_breakpoint_number--; | |
2131 | else | |
2132 | { | |
2133 | set_breakpoint_count (breakpoint_count + 1); | |
2134 | b->number = breakpoint_count; | |
2135 | } | |
2136 | } | |
2137 | ||
e62c965a | 2138 | static struct breakpoint * |
a6d9a66e UW |
2139 | create_internal_breakpoint (struct gdbarch *gdbarch, |
2140 | CORE_ADDR address, enum bptype type) | |
e62c965a | 2141 | { |
e62c965a PP |
2142 | struct symtab_and_line sal; |
2143 | struct breakpoint *b; | |
2144 | ||
4a64f543 | 2145 | init_sal (&sal); /* Initialize to zeroes. */ |
e62c965a PP |
2146 | |
2147 | sal.pc = address; | |
2148 | sal.section = find_pc_overlay (sal.pc); | |
6c95b8df | 2149 | sal.pspace = current_program_space; |
e62c965a | 2150 | |
a6d9a66e | 2151 | b = set_raw_breakpoint (gdbarch, sal, type); |
e62c965a PP |
2152 | b->number = internal_breakpoint_number--; |
2153 | b->disposition = disp_donttouch; | |
2154 | ||
2155 | return b; | |
2156 | } | |
2157 | ||
2158 | static void | |
69de3c6a | 2159 | create_overlay_event_breakpoint (char *func_name) |
e62c965a | 2160 | { |
69de3c6a | 2161 | struct objfile *objfile; |
e62c965a | 2162 | |
69de3c6a PP |
2163 | ALL_OBJFILES (objfile) |
2164 | { | |
2165 | struct breakpoint *b; | |
2166 | struct minimal_symbol *m; | |
2167 | ||
2168 | m = lookup_minimal_symbol_text (func_name, objfile); | |
2169 | if (m == NULL) | |
2170 | continue; | |
e62c965a | 2171 | |
a6d9a66e UW |
2172 | b = create_internal_breakpoint (get_objfile_arch (objfile), |
2173 | SYMBOL_VALUE_ADDRESS (m), | |
69de3c6a PP |
2174 | bp_overlay_event); |
2175 | b->addr_string = xstrdup (func_name); | |
e62c965a | 2176 | |
69de3c6a PP |
2177 | if (overlay_debugging == ovly_auto) |
2178 | { | |
2179 | b->enable_state = bp_enabled; | |
2180 | overlay_events_enabled = 1; | |
2181 | } | |
2182 | else | |
2183 | { | |
2184 | b->enable_state = bp_disabled; | |
2185 | overlay_events_enabled = 0; | |
2186 | } | |
e62c965a PP |
2187 | } |
2188 | update_global_location_list (1); | |
2189 | } | |
2190 | ||
0fd8e87f UW |
2191 | static void |
2192 | create_longjmp_master_breakpoint (char *func_name) | |
2193 | { | |
6c95b8df | 2194 | struct program_space *pspace; |
0fd8e87f | 2195 | struct objfile *objfile; |
6c95b8df PA |
2196 | struct cleanup *old_chain; |
2197 | ||
2198 | old_chain = save_current_program_space (); | |
0fd8e87f | 2199 | |
6c95b8df | 2200 | ALL_PSPACES (pspace) |
0fd8e87f UW |
2201 | ALL_OBJFILES (objfile) |
2202 | { | |
2203 | struct breakpoint *b; | |
2204 | struct minimal_symbol *m; | |
2205 | ||
2206 | if (!gdbarch_get_longjmp_target_p (get_objfile_arch (objfile))) | |
2207 | continue; | |
2208 | ||
6c95b8df PA |
2209 | set_current_program_space (pspace); |
2210 | ||
0fd8e87f UW |
2211 | m = lookup_minimal_symbol_text (func_name, objfile); |
2212 | if (m == NULL) | |
2213 | continue; | |
2214 | ||
a6d9a66e UW |
2215 | b = create_internal_breakpoint (get_objfile_arch (objfile), |
2216 | SYMBOL_VALUE_ADDRESS (m), | |
0fd8e87f UW |
2217 | bp_longjmp_master); |
2218 | b->addr_string = xstrdup (func_name); | |
2219 | b->enable_state = bp_disabled; | |
2220 | } | |
2221 | update_global_location_list (1); | |
6c95b8df PA |
2222 | |
2223 | do_cleanups (old_chain); | |
0fd8e87f UW |
2224 | } |
2225 | ||
aa7d318d TT |
2226 | /* Create a master std::terminate breakpoint. The actual function |
2227 | looked for is named FUNC_NAME. */ | |
2228 | static void | |
2229 | create_std_terminate_master_breakpoint (const char *func_name) | |
2230 | { | |
2231 | struct program_space *pspace; | |
2232 | struct objfile *objfile; | |
2233 | struct cleanup *old_chain; | |
2234 | ||
2235 | old_chain = save_current_program_space (); | |
2236 | ||
2237 | ALL_PSPACES (pspace) | |
2238 | ALL_OBJFILES (objfile) | |
2239 | { | |
2240 | struct breakpoint *b; | |
2241 | struct minimal_symbol *m; | |
2242 | ||
2243 | set_current_program_space (pspace); | |
2244 | ||
2245 | m = lookup_minimal_symbol (func_name, NULL, objfile); | |
2246 | if (m == NULL || (MSYMBOL_TYPE (m) != mst_text | |
2247 | && MSYMBOL_TYPE (m) != mst_file_text)) | |
2248 | continue; | |
2249 | ||
2250 | b = create_internal_breakpoint (get_objfile_arch (objfile), | |
2251 | SYMBOL_VALUE_ADDRESS (m), | |
2252 | bp_std_terminate_master); | |
2253 | b->addr_string = xstrdup (func_name); | |
2254 | b->enable_state = bp_disabled; | |
2255 | } | |
2256 | update_global_location_list (1); | |
2257 | ||
2258 | do_cleanups (old_chain); | |
2259 | } | |
2260 | ||
186c406b TT |
2261 | /* Install a master breakpoint on the unwinder's debug hook. */ |
2262 | ||
2263 | void | |
2264 | create_exception_master_breakpoint (void) | |
2265 | { | |
2266 | struct objfile *objfile; | |
2267 | ||
2268 | ALL_OBJFILES (objfile) | |
2269 | { | |
2270 | struct minimal_symbol *debug_hook; | |
2271 | ||
2272 | debug_hook = lookup_minimal_symbol ("_Unwind_DebugHook", NULL, objfile); | |
2273 | if (debug_hook != NULL) | |
2274 | { | |
2275 | struct breakpoint *b; | |
2276 | CORE_ADDR addr = SYMBOL_VALUE_ADDRESS (debug_hook); | |
2277 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
2278 | ||
2279 | addr = gdbarch_convert_from_func_ptr_addr (gdbarch, addr, | |
2280 | ¤t_target); | |
2281 | b = create_internal_breakpoint (gdbarch, addr, bp_exception_master); | |
2282 | b->addr_string = xstrdup ("_Unwind_DebugHook"); | |
2283 | b->enable_state = bp_disabled; | |
2284 | } | |
2285 | } | |
2286 | ||
2287 | update_global_location_list (1); | |
2288 | } | |
2289 | ||
c906108c | 2290 | void |
fba45db2 | 2291 | update_breakpoints_after_exec (void) |
c906108c | 2292 | { |
35df4500 | 2293 | struct breakpoint *b, *b_tmp; |
876fa593 | 2294 | struct bp_location *bploc, **bplocp_tmp; |
c906108c | 2295 | |
25b22b0a PA |
2296 | /* We're about to delete breakpoints from GDB's lists. If the |
2297 | INSERTED flag is true, GDB will try to lift the breakpoints by | |
2298 | writing the breakpoints' "shadow contents" back into memory. The | |
2299 | "shadow contents" are NOT valid after an exec, so GDB should not | |
2300 | do that. Instead, the target is responsible from marking | |
2301 | breakpoints out as soon as it detects an exec. We don't do that | |
2302 | here instead, because there may be other attempts to delete | |
2303 | breakpoints after detecting an exec and before reaching here. */ | |
876fa593 | 2304 | ALL_BP_LOCATIONS (bploc, bplocp_tmp) |
6c95b8df PA |
2305 | if (bploc->pspace == current_program_space) |
2306 | gdb_assert (!bploc->inserted); | |
c906108c | 2307 | |
35df4500 | 2308 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
c5aa993b | 2309 | { |
6c95b8df PA |
2310 | if (b->pspace != current_program_space) |
2311 | continue; | |
2312 | ||
4a64f543 | 2313 | /* Solib breakpoints must be explicitly reset after an exec(). */ |
c5aa993b JM |
2314 | if (b->type == bp_shlib_event) |
2315 | { | |
2316 | delete_breakpoint (b); | |
2317 | continue; | |
2318 | } | |
c906108c | 2319 | |
4a64f543 | 2320 | /* JIT breakpoints must be explicitly reset after an exec(). */ |
4efc6507 DE |
2321 | if (b->type == bp_jit_event) |
2322 | { | |
2323 | delete_breakpoint (b); | |
2324 | continue; | |
2325 | } | |
2326 | ||
1900040c | 2327 | /* Thread event breakpoints must be set anew after an exec(), |
0fd8e87f UW |
2328 | as must overlay event and longjmp master breakpoints. */ |
2329 | if (b->type == bp_thread_event || b->type == bp_overlay_event | |
186c406b TT |
2330 | || b->type == bp_longjmp_master || b->type == bp_std_terminate_master |
2331 | || b->type == bp_exception_master) | |
c4093a6a JM |
2332 | { |
2333 | delete_breakpoint (b); | |
2334 | continue; | |
2335 | } | |
2336 | ||
4a64f543 | 2337 | /* Step-resume breakpoints are meaningless after an exec(). */ |
c5aa993b JM |
2338 | if (b->type == bp_step_resume) |
2339 | { | |
2340 | delete_breakpoint (b); | |
2341 | continue; | |
2342 | } | |
2343 | ||
611c83ae PA |
2344 | /* Longjmp and longjmp-resume breakpoints are also meaningless |
2345 | after an exec. */ | |
186c406b TT |
2346 | if (b->type == bp_longjmp || b->type == bp_longjmp_resume |
2347 | || b->type == bp_exception || b->type == bp_exception_resume) | |
611c83ae PA |
2348 | { |
2349 | delete_breakpoint (b); | |
2350 | continue; | |
2351 | } | |
2352 | ||
ce78b96d JB |
2353 | if (b->type == bp_catchpoint) |
2354 | { | |
2355 | /* For now, none of the bp_catchpoint breakpoints need to | |
2356 | do anything at this point. In the future, if some of | |
2357 | the catchpoints need to something, we will need to add | |
2358 | a new method, and call this method from here. */ | |
2359 | continue; | |
2360 | } | |
2361 | ||
c5aa993b JM |
2362 | /* bp_finish is a special case. The only way we ought to be able |
2363 | to see one of these when an exec() has happened, is if the user | |
2364 | caught a vfork, and then said "finish". Ordinarily a finish just | |
2365 | carries them to the call-site of the current callee, by setting | |
2366 | a temporary bp there and resuming. But in this case, the finish | |
2367 | will carry them entirely through the vfork & exec. | |
2368 | ||
2369 | We don't want to allow a bp_finish to remain inserted now. But | |
2370 | we can't safely delete it, 'cause finish_command has a handle to | |
2371 | the bp on a bpstat, and will later want to delete it. There's a | |
2372 | chance (and I've seen it happen) that if we delete the bp_finish | |
2373 | here, that its storage will get reused by the time finish_command | |
2374 | gets 'round to deleting the "use to be a bp_finish" breakpoint. | |
2375 | We really must allow finish_command to delete a bp_finish. | |
2376 | ||
53a5351d JM |
2377 | In the absense of a general solution for the "how do we know |
2378 | it's safe to delete something others may have handles to?" | |
2379 | problem, what we'll do here is just uninsert the bp_finish, and | |
2380 | let finish_command delete it. | |
2381 | ||
2382 | (We know the bp_finish is "doomed" in the sense that it's | |
2383 | momentary, and will be deleted as soon as finish_command sees | |
2384 | the inferior stopped. So it doesn't matter that the bp's | |
2385 | address is probably bogus in the new a.out, unlike e.g., the | |
2386 | solib breakpoints.) */ | |
c5aa993b | 2387 | |
c5aa993b JM |
2388 | if (b->type == bp_finish) |
2389 | { | |
2390 | continue; | |
2391 | } | |
2392 | ||
2393 | /* Without a symbolic address, we have little hope of the | |
2394 | pre-exec() address meaning the same thing in the post-exec() | |
4a64f543 | 2395 | a.out. */ |
c5aa993b JM |
2396 | if (b->addr_string == NULL) |
2397 | { | |
2398 | delete_breakpoint (b); | |
2399 | continue; | |
2400 | } | |
c5aa993b | 2401 | } |
1900040c | 2402 | /* FIXME what about longjmp breakpoints? Re-create them here? */ |
69de3c6a | 2403 | create_overlay_event_breakpoint ("_ovly_debug_event"); |
0fd8e87f UW |
2404 | create_longjmp_master_breakpoint ("longjmp"); |
2405 | create_longjmp_master_breakpoint ("_longjmp"); | |
2406 | create_longjmp_master_breakpoint ("siglongjmp"); | |
2407 | create_longjmp_master_breakpoint ("_siglongjmp"); | |
aa7d318d | 2408 | create_std_terminate_master_breakpoint ("std::terminate()"); |
186c406b | 2409 | create_exception_master_breakpoint (); |
c906108c SS |
2410 | } |
2411 | ||
2412 | int | |
fba45db2 | 2413 | detach_breakpoints (int pid) |
c906108c | 2414 | { |
35df4500 | 2415 | struct bp_location *bl, **blp_tmp; |
3a1bae8e | 2416 | int val = 0; |
ce696e05 | 2417 | struct cleanup *old_chain = save_inferior_ptid (); |
6c95b8df | 2418 | struct inferior *inf = current_inferior (); |
c5aa993b | 2419 | |
39f77062 | 2420 | if (pid == PIDGET (inferior_ptid)) |
8a3fe4f8 | 2421 | error (_("Cannot detach breakpoints of inferior_ptid")); |
c5aa993b | 2422 | |
6c95b8df | 2423 | /* Set inferior_ptid; remove_breakpoint_1 uses this global. */ |
ce696e05 | 2424 | inferior_ptid = pid_to_ptid (pid); |
35df4500 | 2425 | ALL_BP_LOCATIONS (bl, blp_tmp) |
c5aa993b | 2426 | { |
35df4500 | 2427 | if (bl->pspace != inf->pspace) |
6c95b8df PA |
2428 | continue; |
2429 | ||
35df4500 TJB |
2430 | if (bl->inserted) |
2431 | val |= remove_breakpoint_1 (bl, mark_inserted); | |
c5aa993b | 2432 | } |
d03285ec UW |
2433 | |
2434 | /* Detach single-step breakpoints as well. */ | |
2435 | detach_single_step_breakpoints (); | |
2436 | ||
ce696e05 | 2437 | do_cleanups (old_chain); |
3a1bae8e | 2438 | return val; |
c906108c SS |
2439 | } |
2440 | ||
35df4500 | 2441 | /* Remove the breakpoint location BL from the current address space. |
6c95b8df PA |
2442 | Note that this is used to detach breakpoints from a child fork. |
2443 | When we get here, the child isn't in the inferior list, and neither | |
2444 | do we have objects to represent its address space --- we should | |
35df4500 | 2445 | *not* look at bl->pspace->aspace here. */ |
6c95b8df | 2446 | |
c906108c | 2447 | static int |
35df4500 | 2448 | remove_breakpoint_1 (struct bp_location *bl, insertion_state_t is) |
c906108c SS |
2449 | { |
2450 | int val; | |
c5aa993b | 2451 | |
35df4500 TJB |
2452 | /* BL is never in moribund_locations by our callers. */ |
2453 | gdb_assert (bl->owner != NULL); | |
2bdf28a0 | 2454 | |
35df4500 | 2455 | if (bl->owner->enable_state == bp_permanent) |
c2c6d25f JM |
2456 | /* Permanent breakpoints cannot be inserted or removed. */ |
2457 | return 0; | |
2458 | ||
74960c60 VP |
2459 | /* The type of none suggests that owner is actually deleted. |
2460 | This should not ever happen. */ | |
35df4500 | 2461 | gdb_assert (bl->owner->type != bp_none); |
0bde7532 | 2462 | |
35df4500 TJB |
2463 | if (bl->loc_type == bp_loc_software_breakpoint |
2464 | || bl->loc_type == bp_loc_hardware_breakpoint) | |
c906108c | 2465 | { |
c02f5703 MS |
2466 | /* "Normal" instruction breakpoint: either the standard |
2467 | trap-instruction bp (bp_breakpoint), or a | |
2468 | bp_hardware_breakpoint. */ | |
2469 | ||
2470 | /* First check to see if we have to handle an overlay. */ | |
2471 | if (overlay_debugging == ovly_off | |
35df4500 TJB |
2472 | || bl->section == NULL |
2473 | || !(section_is_overlay (bl->section))) | |
c02f5703 MS |
2474 | { |
2475 | /* No overlay handling: just remove the breakpoint. */ | |
2476 | ||
35df4500 TJB |
2477 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
2478 | val = target_remove_hw_breakpoint (bl->gdbarch, &bl->target_info); | |
c02f5703 | 2479 | else |
35df4500 | 2480 | val = target_remove_breakpoint (bl->gdbarch, &bl->target_info); |
c02f5703 | 2481 | } |
c906108c SS |
2482 | else |
2483 | { | |
4a64f543 | 2484 | /* This breakpoint is in an overlay section. |
c02f5703 MS |
2485 | Did we set a breakpoint at the LMA? */ |
2486 | if (!overlay_events_enabled) | |
2487 | { | |
2488 | /* Yes -- overlay event support is not active, so we | |
2489 | should have set a breakpoint at the LMA. Remove it. | |
2490 | */ | |
c02f5703 MS |
2491 | /* Ignore any failures: if the LMA is in ROM, we will |
2492 | have already warned when we failed to insert it. */ | |
35df4500 TJB |
2493 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
2494 | target_remove_hw_breakpoint (bl->gdbarch, | |
2495 | &bl->overlay_target_info); | |
c02f5703 | 2496 | else |
35df4500 TJB |
2497 | target_remove_breakpoint (bl->gdbarch, |
2498 | &bl->overlay_target_info); | |
c02f5703 MS |
2499 | } |
2500 | /* Did we set a breakpoint at the VMA? | |
2501 | If so, we will have marked the breakpoint 'inserted'. */ | |
35df4500 | 2502 | if (bl->inserted) |
c906108c | 2503 | { |
c02f5703 MS |
2504 | /* Yes -- remove it. Previously we did not bother to |
2505 | remove the breakpoint if the section had been | |
2506 | unmapped, but let's not rely on that being safe. We | |
2507 | don't know what the overlay manager might do. */ | |
35df4500 TJB |
2508 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
2509 | val = target_remove_hw_breakpoint (bl->gdbarch, | |
2510 | &bl->target_info); | |
aa67235e UW |
2511 | |
2512 | /* However, we should remove *software* breakpoints only | |
2513 | if the section is still mapped, or else we overwrite | |
2514 | wrong code with the saved shadow contents. */ | |
35df4500 TJB |
2515 | else if (section_is_mapped (bl->section)) |
2516 | val = target_remove_breakpoint (bl->gdbarch, | |
2517 | &bl->target_info); | |
aa67235e UW |
2518 | else |
2519 | val = 0; | |
c906108c | 2520 | } |
c02f5703 MS |
2521 | else |
2522 | { | |
2523 | /* No -- not inserted, so no need to remove. No error. */ | |
2524 | val = 0; | |
2525 | } | |
c906108c | 2526 | } |
879d1e6b UW |
2527 | |
2528 | /* In some cases, we might not be able to remove a breakpoint | |
2529 | in a shared library that has already been removed, but we | |
2530 | have not yet processed the shlib unload event. */ | |
35df4500 | 2531 | if (val && solib_name_from_address (bl->pspace, bl->address)) |
879d1e6b UW |
2532 | val = 0; |
2533 | ||
c906108c SS |
2534 | if (val) |
2535 | return val; | |
35df4500 | 2536 | bl->inserted = (is == mark_inserted); |
c906108c | 2537 | } |
35df4500 | 2538 | else if (bl->loc_type == bp_loc_hardware_watchpoint) |
c906108c | 2539 | { |
35df4500 TJB |
2540 | bl->inserted = (is == mark_inserted); |
2541 | val = target_remove_watchpoint (bl->address, bl->length, | |
4a64f543 MS |
2542 | bl->watchpoint_type, |
2543 | bl->owner->cond_exp); | |
2e70b7b9 | 2544 | |
c906108c | 2545 | /* Failure to remove any of the hardware watchpoints comes here. */ |
35df4500 | 2546 | if ((is == mark_uninserted) && (bl->inserted)) |
8a3fe4f8 | 2547 | warning (_("Could not remove hardware watchpoint %d."), |
35df4500 | 2548 | bl->owner->number); |
c906108c | 2549 | } |
35df4500 TJB |
2550 | else if (bl->owner->type == bp_catchpoint |
2551 | && breakpoint_enabled (bl->owner) | |
2552 | && !bl->duplicate) | |
ce78b96d | 2553 | { |
35df4500 | 2554 | gdb_assert (bl->owner->ops != NULL && bl->owner->ops->remove != NULL); |
ce78b96d | 2555 | |
35df4500 | 2556 | val = bl->owner->ops->remove (bl->owner); |
ce78b96d JB |
2557 | if (val) |
2558 | return val; | |
35df4500 | 2559 | bl->inserted = (is == mark_inserted); |
ce78b96d | 2560 | } |
c906108c SS |
2561 | |
2562 | return 0; | |
2563 | } | |
2564 | ||
6c95b8df | 2565 | static int |
35df4500 | 2566 | remove_breakpoint (struct bp_location *bl, insertion_state_t is) |
6c95b8df PA |
2567 | { |
2568 | int ret; | |
2569 | struct cleanup *old_chain; | |
2570 | ||
35df4500 TJB |
2571 | /* BL is never in moribund_locations by our callers. */ |
2572 | gdb_assert (bl->owner != NULL); | |
2bdf28a0 | 2573 | |
35df4500 | 2574 | if (bl->owner->enable_state == bp_permanent) |
6c95b8df PA |
2575 | /* Permanent breakpoints cannot be inserted or removed. */ |
2576 | return 0; | |
2577 | ||
2578 | /* The type of none suggests that owner is actually deleted. | |
2579 | This should not ever happen. */ | |
35df4500 | 2580 | gdb_assert (bl->owner->type != bp_none); |
6c95b8df PA |
2581 | |
2582 | old_chain = save_current_space_and_thread (); | |
2583 | ||
35df4500 | 2584 | switch_to_program_space_and_thread (bl->pspace); |
6c95b8df | 2585 | |
35df4500 | 2586 | ret = remove_breakpoint_1 (bl, is); |
6c95b8df PA |
2587 | |
2588 | do_cleanups (old_chain); | |
2589 | return ret; | |
2590 | } | |
2591 | ||
c906108c SS |
2592 | /* Clear the "inserted" flag in all breakpoints. */ |
2593 | ||
25b22b0a | 2594 | void |
fba45db2 | 2595 | mark_breakpoints_out (void) |
c906108c | 2596 | { |
35df4500 | 2597 | struct bp_location *bl, **blp_tmp; |
c906108c | 2598 | |
35df4500 TJB |
2599 | ALL_BP_LOCATIONS (bl, blp_tmp) |
2600 | if (bl->pspace == current_program_space) | |
2601 | bl->inserted = 0; | |
c906108c SS |
2602 | } |
2603 | ||
53a5351d JM |
2604 | /* Clear the "inserted" flag in all breakpoints and delete any |
2605 | breakpoints which should go away between runs of the program. | |
c906108c SS |
2606 | |
2607 | Plus other such housekeeping that has to be done for breakpoints | |
2608 | between runs. | |
2609 | ||
53a5351d JM |
2610 | Note: this function gets called at the end of a run (by |
2611 | generic_mourn_inferior) and when a run begins (by | |
4a64f543 | 2612 | init_wait_for_inferior). */ |
c906108c SS |
2613 | |
2614 | ||
2615 | ||
2616 | void | |
fba45db2 | 2617 | breakpoint_init_inferior (enum inf_context context) |
c906108c | 2618 | { |
35df4500 TJB |
2619 | struct breakpoint *b, *b_tmp; |
2620 | struct bp_location *bl, **blp_tmp; | |
1c5cfe86 | 2621 | int ix; |
6c95b8df | 2622 | struct program_space *pspace = current_program_space; |
c906108c | 2623 | |
50c71eaf PA |
2624 | /* If breakpoint locations are shared across processes, then there's |
2625 | nothing to do. */ | |
2567c7d9 | 2626 | if (gdbarch_has_global_breakpoints (target_gdbarch)) |
50c71eaf PA |
2627 | return; |
2628 | ||
35df4500 | 2629 | ALL_BP_LOCATIONS (bl, blp_tmp) |
6c95b8df | 2630 | { |
35df4500 TJB |
2631 | /* ALL_BP_LOCATIONS bp_location has BL->OWNER always non-NULL. */ |
2632 | if (bl->pspace == pspace | |
2633 | && bl->owner->enable_state != bp_permanent) | |
2634 | bl->inserted = 0; | |
6c95b8df | 2635 | } |
075f6582 | 2636 | |
35df4500 | 2637 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
c5aa993b | 2638 | { |
6c95b8df PA |
2639 | if (b->loc && b->loc->pspace != pspace) |
2640 | continue; | |
2641 | ||
c5aa993b JM |
2642 | switch (b->type) |
2643 | { | |
2644 | case bp_call_dummy: | |
c906108c | 2645 | |
c5aa993b | 2646 | /* If the call dummy breakpoint is at the entry point it will |
ab92d69b PA |
2647 | cause problems when the inferior is rerun, so we better get |
2648 | rid of it. */ | |
2649 | ||
2650 | case bp_watchpoint_scope: | |
2651 | ||
2652 | /* Also get rid of scope breakpoints. */ | |
2653 | ||
2654 | case bp_shlib_event: | |
2655 | ||
2656 | /* Also remove solib event breakpoints. Their addresses may | |
2657 | have changed since the last time we ran the program. | |
2658 | Actually we may now be debugging against different target; | |
2659 | and so the solib backend that installed this breakpoint may | |
2660 | not be used in by the target. E.g., | |
2661 | ||
2662 | (gdb) file prog-linux | |
2663 | (gdb) run # native linux target | |
2664 | ... | |
2665 | (gdb) kill | |
2666 | (gdb) file prog-win.exe | |
2667 | (gdb) tar rem :9999 # remote Windows gdbserver. | |
2668 | */ | |
c906108c | 2669 | |
c5aa993b JM |
2670 | delete_breakpoint (b); |
2671 | break; | |
c906108c | 2672 | |
c5aa993b JM |
2673 | case bp_watchpoint: |
2674 | case bp_hardware_watchpoint: | |
2675 | case bp_read_watchpoint: | |
2676 | case bp_access_watchpoint: | |
c906108c | 2677 | |
c5aa993b JM |
2678 | /* Likewise for watchpoints on local expressions. */ |
2679 | if (b->exp_valid_block != NULL) | |
2680 | delete_breakpoint (b); | |
967af18d | 2681 | else if (context == inf_starting) |
c860120c | 2682 | { |
4a64f543 MS |
2683 | /* Reset val field to force reread of starting value in |
2684 | insert_breakpoints. */ | |
c860120c PM |
2685 | if (b->val) |
2686 | value_free (b->val); | |
2687 | b->val = NULL; | |
fa4727a6 | 2688 | b->val_valid = 0; |
c860120c | 2689 | } |
c5aa993b JM |
2690 | break; |
2691 | default: | |
c5aa993b JM |
2692 | break; |
2693 | } | |
2694 | } | |
1c5cfe86 PA |
2695 | |
2696 | /* Get rid of the moribund locations. */ | |
35df4500 TJB |
2697 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, bl); ++ix) |
2698 | decref_bp_location (&bl); | |
1c5cfe86 | 2699 | VEC_free (bp_location_p, moribund_locations); |
c906108c SS |
2700 | } |
2701 | ||
6c95b8df PA |
2702 | /* These functions concern about actual breakpoints inserted in the |
2703 | target --- to e.g. check if we need to do decr_pc adjustment or if | |
2704 | we need to hop over the bkpt --- so we check for address space | |
2705 | match, not program space. */ | |
2706 | ||
c2c6d25f JM |
2707 | /* breakpoint_here_p (PC) returns non-zero if an enabled breakpoint |
2708 | exists at PC. It returns ordinary_breakpoint_here if it's an | |
2709 | ordinary breakpoint, or permanent_breakpoint_here if it's a | |
2710 | permanent breakpoint. | |
2711 | - When continuing from a location with an ordinary breakpoint, we | |
2712 | actually single step once before calling insert_breakpoints. | |
2713 | - When continuing from a localion with a permanent breakpoint, we | |
2714 | need to use the `SKIP_PERMANENT_BREAKPOINT' macro, provided by | |
2715 | the target, to advance the PC past the breakpoint. */ | |
c906108c | 2716 | |
c2c6d25f | 2717 | enum breakpoint_here |
6c95b8df | 2718 | breakpoint_here_p (struct address_space *aspace, CORE_ADDR pc) |
c906108c | 2719 | { |
35df4500 | 2720 | struct bp_location *bl, **blp_tmp; |
c2c6d25f | 2721 | int any_breakpoint_here = 0; |
c906108c | 2722 | |
35df4500 | 2723 | ALL_BP_LOCATIONS (bl, blp_tmp) |
075f6582 | 2724 | { |
35df4500 TJB |
2725 | if (bl->loc_type != bp_loc_software_breakpoint |
2726 | && bl->loc_type != bp_loc_hardware_breakpoint) | |
075f6582 DJ |
2727 | continue; |
2728 | ||
35df4500 TJB |
2729 | /* ALL_BP_LOCATIONS bp_location has bl->OWNER always non-NULL. */ |
2730 | if ((breakpoint_enabled (bl->owner) | |
2731 | || bl->owner->enable_state == bp_permanent) | |
2732 | && breakpoint_address_match (bl->pspace->aspace, bl->address, | |
6c95b8df | 2733 | aspace, pc)) |
075f6582 DJ |
2734 | { |
2735 | if (overlay_debugging | |
35df4500 TJB |
2736 | && section_is_overlay (bl->section) |
2737 | && !section_is_mapped (bl->section)) | |
075f6582 | 2738 | continue; /* unmapped overlay -- can't be a match */ |
35df4500 | 2739 | else if (bl->owner->enable_state == bp_permanent) |
075f6582 DJ |
2740 | return permanent_breakpoint_here; |
2741 | else | |
2742 | any_breakpoint_here = 1; | |
2743 | } | |
2744 | } | |
c906108c | 2745 | |
c2c6d25f | 2746 | return any_breakpoint_here ? ordinary_breakpoint_here : 0; |
c906108c SS |
2747 | } |
2748 | ||
1c5cfe86 PA |
2749 | /* Return true if there's a moribund breakpoint at PC. */ |
2750 | ||
2751 | int | |
6c95b8df | 2752 | moribund_breakpoint_here_p (struct address_space *aspace, CORE_ADDR pc) |
1c5cfe86 PA |
2753 | { |
2754 | struct bp_location *loc; | |
2755 | int ix; | |
2756 | ||
2757 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, loc); ++ix) | |
6c95b8df PA |
2758 | if (breakpoint_address_match (loc->pspace->aspace, loc->address, |
2759 | aspace, pc)) | |
1c5cfe86 PA |
2760 | return 1; |
2761 | ||
2762 | return 0; | |
2763 | } | |
c2c6d25f | 2764 | |
c36b740a | 2765 | /* Returns non-zero if there's a breakpoint inserted at PC, which is |
4a64f543 MS |
2766 | inserted using regular breakpoint_chain / bp_location array |
2767 | mechanism. This does not check for single-step breakpoints, which | |
2768 | are inserted and removed using direct target manipulation. */ | |
c906108c SS |
2769 | |
2770 | int | |
4a64f543 MS |
2771 | regular_breakpoint_inserted_here_p (struct address_space *aspace, |
2772 | CORE_ADDR pc) | |
c906108c | 2773 | { |
35df4500 | 2774 | struct bp_location *bl, **blp_tmp; |
c906108c | 2775 | |
35df4500 | 2776 | ALL_BP_LOCATIONS (bl, blp_tmp) |
c5aa993b | 2777 | { |
35df4500 TJB |
2778 | if (bl->loc_type != bp_loc_software_breakpoint |
2779 | && bl->loc_type != bp_loc_hardware_breakpoint) | |
075f6582 DJ |
2780 | continue; |
2781 | ||
35df4500 TJB |
2782 | if (bl->inserted |
2783 | && breakpoint_address_match (bl->pspace->aspace, bl->address, | |
6c95b8df | 2784 | aspace, pc)) |
075f6582 DJ |
2785 | { |
2786 | if (overlay_debugging | |
35df4500 TJB |
2787 | && section_is_overlay (bl->section) |
2788 | && !section_is_mapped (bl->section)) | |
075f6582 DJ |
2789 | continue; /* unmapped overlay -- can't be a match */ |
2790 | else | |
2791 | return 1; | |
2792 | } | |
c5aa993b | 2793 | } |
c36b740a VP |
2794 | return 0; |
2795 | } | |
2796 | ||
2797 | /* Returns non-zero iff there's either regular breakpoint | |
2798 | or a single step breakpoint inserted at PC. */ | |
2799 | ||
2800 | int | |
6c95b8df | 2801 | breakpoint_inserted_here_p (struct address_space *aspace, CORE_ADDR pc) |
c36b740a | 2802 | { |
6c95b8df | 2803 | if (regular_breakpoint_inserted_here_p (aspace, pc)) |
c36b740a | 2804 | return 1; |
c906108c | 2805 | |
6c95b8df | 2806 | if (single_step_breakpoint_inserted_here_p (aspace, pc)) |
1aafd4da UW |
2807 | return 1; |
2808 | ||
c906108c SS |
2809 | return 0; |
2810 | } | |
2811 | ||
4fa8626c DJ |
2812 | /* This function returns non-zero iff there is a software breakpoint |
2813 | inserted at PC. */ | |
2814 | ||
2815 | int | |
3e43a32a MS |
2816 | software_breakpoint_inserted_here_p (struct address_space *aspace, |
2817 | CORE_ADDR pc) | |
4fa8626c | 2818 | { |
35df4500 | 2819 | struct bp_location *bl, **blp_tmp; |
4fa8626c | 2820 | |
35df4500 | 2821 | ALL_BP_LOCATIONS (bl, blp_tmp) |
4fa8626c | 2822 | { |
35df4500 | 2823 | if (bl->loc_type != bp_loc_software_breakpoint) |
4fa8626c DJ |
2824 | continue; |
2825 | ||
35df4500 TJB |
2826 | if (bl->inserted |
2827 | && breakpoint_address_match (bl->pspace->aspace, bl->address, | |
6c95b8df | 2828 | aspace, pc)) |
4fa8626c DJ |
2829 | { |
2830 | if (overlay_debugging | |
35df4500 TJB |
2831 | && section_is_overlay (bl->section) |
2832 | && !section_is_mapped (bl->section)) | |
4fa8626c DJ |
2833 | continue; /* unmapped overlay -- can't be a match */ |
2834 | else | |
2835 | return 1; | |
2836 | } | |
2837 | } | |
2838 | ||
1aafd4da | 2839 | /* Also check for software single-step breakpoints. */ |
6c95b8df | 2840 | if (single_step_breakpoint_inserted_here_p (aspace, pc)) |
1aafd4da UW |
2841 | return 1; |
2842 | ||
4fa8626c DJ |
2843 | return 0; |
2844 | } | |
2845 | ||
9093389c PA |
2846 | int |
2847 | hardware_watchpoint_inserted_in_range (struct address_space *aspace, | |
2848 | CORE_ADDR addr, ULONGEST len) | |
2849 | { | |
2850 | struct breakpoint *bpt; | |
2851 | ||
2852 | ALL_BREAKPOINTS (bpt) | |
2853 | { | |
2854 | struct bp_location *loc; | |
2855 | ||
2856 | if (bpt->type != bp_hardware_watchpoint | |
2857 | && bpt->type != bp_access_watchpoint) | |
2858 | continue; | |
2859 | ||
2860 | if (!breakpoint_enabled (bpt)) | |
2861 | continue; | |
2862 | ||
2863 | for (loc = bpt->loc; loc; loc = loc->next) | |
2864 | if (loc->pspace->aspace == aspace && loc->inserted) | |
2865 | { | |
2866 | CORE_ADDR l, h; | |
2867 | ||
2868 | /* Check for intersection. */ | |
2869 | l = max (loc->address, addr); | |
2870 | h = min (loc->address + loc->length, addr + len); | |
2871 | if (l < h) | |
2872 | return 1; | |
2873 | } | |
2874 | } | |
2875 | return 0; | |
2876 | } | |
2877 | ||
075f6582 DJ |
2878 | /* breakpoint_thread_match (PC, PTID) returns true if the breakpoint at |
2879 | PC is valid for process/thread PTID. */ | |
c906108c SS |
2880 | |
2881 | int | |
6c95b8df PA |
2882 | breakpoint_thread_match (struct address_space *aspace, CORE_ADDR pc, |
2883 | ptid_t ptid) | |
c906108c | 2884 | { |
35df4500 | 2885 | struct bp_location *bl, **blp_tmp; |
4a306c9a | 2886 | /* The thread and task IDs associated to PTID, computed lazily. */ |
a6f1cd96 | 2887 | int thread = -1; |
4a306c9a | 2888 | int task = 0; |
a6f1cd96 | 2889 | |
35df4500 | 2890 | ALL_BP_LOCATIONS (bl, blp_tmp) |
c5aa993b | 2891 | { |
35df4500 TJB |
2892 | if (bl->loc_type != bp_loc_software_breakpoint |
2893 | && bl->loc_type != bp_loc_hardware_breakpoint) | |
075f6582 DJ |
2894 | continue; |
2895 | ||
35df4500 TJB |
2896 | /* ALL_BP_LOCATIONS bp_location has bl->OWNER always non-NULL. */ |
2897 | if (!breakpoint_enabled (bl->owner) | |
2898 | && bl->owner->enable_state != bp_permanent) | |
a6f1cd96 JB |
2899 | continue; |
2900 | ||
35df4500 | 2901 | if (!breakpoint_address_match (bl->pspace->aspace, bl->address, |
6c95b8df | 2902 | aspace, pc)) |
a6f1cd96 JB |
2903 | continue; |
2904 | ||
35df4500 | 2905 | if (bl->owner->thread != -1) |
075f6582 | 2906 | { |
a6f1cd96 JB |
2907 | /* This is a thread-specific breakpoint. Check that ptid |
2908 | matches that thread. If thread hasn't been computed yet, | |
2909 | it is now time to do so. */ | |
2910 | if (thread == -1) | |
2911 | thread = pid_to_thread_id (ptid); | |
35df4500 | 2912 | if (bl->owner->thread != thread) |
a6f1cd96 | 2913 | continue; |
075f6582 | 2914 | } |
a6f1cd96 | 2915 | |
35df4500 | 2916 | if (bl->owner->task != 0) |
4a306c9a JB |
2917 | { |
2918 | /* This is a task-specific breakpoint. Check that ptid | |
2919 | matches that task. If task hasn't been computed yet, | |
2920 | it is now time to do so. */ | |
2921 | if (task == 0) | |
2922 | task = ada_get_task_number (ptid); | |
35df4500 | 2923 | if (bl->owner->task != task) |
4a306c9a JB |
2924 | continue; |
2925 | } | |
2926 | ||
a6f1cd96 | 2927 | if (overlay_debugging |
35df4500 TJB |
2928 | && section_is_overlay (bl->section) |
2929 | && !section_is_mapped (bl->section)) | |
a6f1cd96 JB |
2930 | continue; /* unmapped overlay -- can't be a match */ |
2931 | ||
2932 | return 1; | |
c5aa993b | 2933 | } |
c906108c SS |
2934 | |
2935 | return 0; | |
2936 | } | |
c906108c | 2937 | \f |
c5aa993b | 2938 | |
c906108c SS |
2939 | /* bpstat stuff. External routines' interfaces are documented |
2940 | in breakpoint.h. */ | |
2941 | ||
2942 | int | |
fba45db2 | 2943 | ep_is_catchpoint (struct breakpoint *ep) |
c906108c | 2944 | { |
533be4dd | 2945 | return (ep->type == bp_catchpoint); |
c906108c SS |
2946 | } |
2947 | ||
f431efe5 PA |
2948 | /* Frees any storage that is part of a bpstat. Does not walk the |
2949 | 'next' chain. */ | |
2950 | ||
2951 | static void | |
198757a8 VP |
2952 | bpstat_free (bpstat bs) |
2953 | { | |
2954 | if (bs->old_val != NULL) | |
2955 | value_free (bs->old_val); | |
9add0f1b | 2956 | decref_counted_command_line (&bs->commands); |
f431efe5 | 2957 | decref_bp_location (&bs->bp_location_at); |
198757a8 VP |
2958 | xfree (bs); |
2959 | } | |
2960 | ||
c906108c SS |
2961 | /* Clear a bpstat so that it says we are not at any breakpoint. |
2962 | Also free any storage that is part of a bpstat. */ | |
2963 | ||
2964 | void | |
fba45db2 | 2965 | bpstat_clear (bpstat *bsp) |
c906108c SS |
2966 | { |
2967 | bpstat p; | |
2968 | bpstat q; | |
2969 | ||
2970 | if (bsp == 0) | |
2971 | return; | |
2972 | p = *bsp; | |
2973 | while (p != NULL) | |
2974 | { | |
2975 | q = p->next; | |
198757a8 | 2976 | bpstat_free (p); |
c906108c SS |
2977 | p = q; |
2978 | } | |
2979 | *bsp = NULL; | |
2980 | } | |
2981 | ||
2982 | /* Return a copy of a bpstat. Like "bs1 = bs2" but all storage that | |
2983 | is part of the bpstat is copied as well. */ | |
2984 | ||
2985 | bpstat | |
fba45db2 | 2986 | bpstat_copy (bpstat bs) |
c906108c SS |
2987 | { |
2988 | bpstat p = NULL; | |
2989 | bpstat tmp; | |
2990 | bpstat retval = NULL; | |
2991 | ||
2992 | if (bs == NULL) | |
2993 | return bs; | |
2994 | ||
2995 | for (; bs != NULL; bs = bs->next) | |
2996 | { | |
2997 | tmp = (bpstat) xmalloc (sizeof (*tmp)); | |
2998 | memcpy (tmp, bs, sizeof (*tmp)); | |
9add0f1b | 2999 | incref_counted_command_line (tmp->commands); |
f431efe5 | 3000 | incref_bp_location (tmp->bp_location_at); |
31cc81e9 | 3001 | if (bs->old_val != NULL) |
3c3185ac JK |
3002 | { |
3003 | tmp->old_val = value_copy (bs->old_val); | |
3004 | release_value (tmp->old_val); | |
3005 | } | |
31cc81e9 | 3006 | |
c906108c SS |
3007 | if (p == NULL) |
3008 | /* This is the first thing in the chain. */ | |
3009 | retval = tmp; | |
3010 | else | |
3011 | p->next = tmp; | |
3012 | p = tmp; | |
3013 | } | |
3014 | p->next = NULL; | |
3015 | return retval; | |
3016 | } | |
3017 | ||
4a64f543 | 3018 | /* Find the bpstat associated with this breakpoint. */ |
c906108c SS |
3019 | |
3020 | bpstat | |
fba45db2 | 3021 | bpstat_find_breakpoint (bpstat bsp, struct breakpoint *breakpoint) |
c906108c | 3022 | { |
c5aa993b JM |
3023 | if (bsp == NULL) |
3024 | return NULL; | |
c906108c | 3025 | |
c5aa993b JM |
3026 | for (; bsp != NULL; bsp = bsp->next) |
3027 | { | |
f431efe5 | 3028 | if (bsp->breakpoint_at == breakpoint) |
c5aa993b JM |
3029 | return bsp; |
3030 | } | |
c906108c SS |
3031 | return NULL; |
3032 | } | |
3033 | ||
4a64f543 MS |
3034 | /* Put in *NUM the breakpoint number of the first breakpoint we are |
3035 | stopped at. *BSP upon return is a bpstat which points to the | |
3036 | remaining breakpoints stopped at (but which is not guaranteed to be | |
3037 | good for anything but further calls to bpstat_num). | |
3038 | ||
8671a17b PA |
3039 | Return 0 if passed a bpstat which does not indicate any breakpoints. |
3040 | Return -1 if stopped at a breakpoint that has been deleted since | |
3041 | we set it. | |
3042 | Return 1 otherwise. */ | |
c906108c SS |
3043 | |
3044 | int | |
8671a17b | 3045 | bpstat_num (bpstat *bsp, int *num) |
c906108c SS |
3046 | { |
3047 | struct breakpoint *b; | |
3048 | ||
3049 | if ((*bsp) == NULL) | |
3050 | return 0; /* No more breakpoint values */ | |
8671a17b | 3051 | |
4a64f543 MS |
3052 | /* We assume we'll never have several bpstats that correspond to a |
3053 | single breakpoint -- otherwise, this function might return the | |
3054 | same number more than once and this will look ugly. */ | |
f431efe5 | 3055 | b = (*bsp)->breakpoint_at; |
8671a17b PA |
3056 | *bsp = (*bsp)->next; |
3057 | if (b == NULL) | |
3058 | return -1; /* breakpoint that's been deleted since */ | |
3059 | ||
3060 | *num = b->number; /* We have its number */ | |
3061 | return 1; | |
c906108c SS |
3062 | } |
3063 | ||
3064 | /* Modify BS so that the actions will not be performed. */ | |
3065 | ||
3066 | void | |
fba45db2 | 3067 | bpstat_clear_actions (bpstat bs) |
c906108c SS |
3068 | { |
3069 | for (; bs != NULL; bs = bs->next) | |
3070 | { | |
9add0f1b | 3071 | decref_counted_command_line (&bs->commands); |
dde2d684 | 3072 | bs->commands_left = NULL; |
c906108c SS |
3073 | if (bs->old_val != NULL) |
3074 | { | |
3075 | value_free (bs->old_val); | |
3076 | bs->old_val = NULL; | |
3077 | } | |
3078 | } | |
3079 | } | |
3080 | ||
f3b1572e PA |
3081 | /* Called when a command is about to proceed the inferior. */ |
3082 | ||
3083 | static void | |
3084 | breakpoint_about_to_proceed (void) | |
3085 | { | |
3086 | if (!ptid_equal (inferior_ptid, null_ptid)) | |
3087 | { | |
3088 | struct thread_info *tp = inferior_thread (); | |
3089 | ||
3090 | /* Allow inferior function calls in breakpoint commands to not | |
3091 | interrupt the command list. When the call finishes | |
3092 | successfully, the inferior will be standing at the same | |
3093 | breakpoint as if nothing happened. */ | |
16c381f0 | 3094 | if (tp->control.in_infcall) |
f3b1572e PA |
3095 | return; |
3096 | } | |
3097 | ||
3098 | breakpoint_proceeded = 1; | |
3099 | } | |
3100 | ||
4a64f543 MS |
3101 | /* Stub for cleaning up our state if we error-out of a breakpoint |
3102 | command. */ | |
c906108c | 3103 | static void |
4efb68b1 | 3104 | cleanup_executing_breakpoints (void *ignore) |
c906108c SS |
3105 | { |
3106 | executing_breakpoint_commands = 0; | |
3107 | } | |
3108 | ||
4a64f543 MS |
3109 | /* Execute all the commands associated with all the breakpoints at |
3110 | this location. Any of these commands could cause the process to | |
3111 | proceed beyond this point, etc. We look out for such changes by | |
3112 | checking the global "breakpoint_proceeded" after each command. | |
c906108c | 3113 | |
347bddb7 PA |
3114 | Returns true if a breakpoint command resumed the inferior. In that |
3115 | case, it is the caller's responsibility to recall it again with the | |
3116 | bpstat of the current thread. */ | |
3117 | ||
3118 | static int | |
3119 | bpstat_do_actions_1 (bpstat *bsp) | |
c906108c SS |
3120 | { |
3121 | bpstat bs; | |
3122 | struct cleanup *old_chain; | |
347bddb7 | 3123 | int again = 0; |
c906108c SS |
3124 | |
3125 | /* Avoid endless recursion if a `source' command is contained | |
3126 | in bs->commands. */ | |
3127 | if (executing_breakpoint_commands) | |
347bddb7 | 3128 | return 0; |
c906108c SS |
3129 | |
3130 | executing_breakpoint_commands = 1; | |
3131 | old_chain = make_cleanup (cleanup_executing_breakpoints, 0); | |
3132 | ||
4a64f543 | 3133 | /* This pointer will iterate over the list of bpstat's. */ |
c906108c SS |
3134 | bs = *bsp; |
3135 | ||
3136 | breakpoint_proceeded = 0; | |
3137 | for (; bs != NULL; bs = bs->next) | |
3138 | { | |
9add0f1b | 3139 | struct counted_command_line *ccmd; |
6c50ab1c JB |
3140 | struct command_line *cmd; |
3141 | struct cleanup *this_cmd_tree_chain; | |
3142 | ||
3143 | /* Take ownership of the BSP's command tree, if it has one. | |
3144 | ||
3145 | The command tree could legitimately contain commands like | |
3146 | 'step' and 'next', which call clear_proceed_status, which | |
3147 | frees stop_bpstat's command tree. To make sure this doesn't | |
3148 | free the tree we're executing out from under us, we need to | |
3149 | take ownership of the tree ourselves. Since a given bpstat's | |
3150 | commands are only executed once, we don't need to copy it; we | |
3151 | can clear the pointer in the bpstat, and make sure we free | |
3152 | the tree when we're done. */ | |
9add0f1b TT |
3153 | ccmd = bs->commands; |
3154 | bs->commands = NULL; | |
3155 | this_cmd_tree_chain | |
3156 | = make_cleanup_decref_counted_command_line (&ccmd); | |
3157 | cmd = bs->commands_left; | |
3158 | bs->commands_left = NULL; | |
6c50ab1c | 3159 | |
c906108c SS |
3160 | while (cmd != NULL) |
3161 | { | |
3162 | execute_control_command (cmd); | |
3163 | ||
3164 | if (breakpoint_proceeded) | |
3165 | break; | |
3166 | else | |
3167 | cmd = cmd->next; | |
3168 | } | |
6c50ab1c JB |
3169 | |
3170 | /* We can free this command tree now. */ | |
3171 | do_cleanups (this_cmd_tree_chain); | |
3172 | ||
c906108c | 3173 | if (breakpoint_proceeded) |
32c1e744 VP |
3174 | { |
3175 | if (target_can_async_p ()) | |
347bddb7 PA |
3176 | /* If we are in async mode, then the target might be still |
3177 | running, not stopped at any breakpoint, so nothing for | |
3178 | us to do here -- just return to the event loop. */ | |
3179 | ; | |
32c1e744 VP |
3180 | else |
3181 | /* In sync mode, when execute_control_command returns | |
3182 | we're already standing on the next breakpoint. | |
347bddb7 PA |
3183 | Breakpoint commands for that stop were not run, since |
3184 | execute_command does not run breakpoint commands -- | |
3185 | only command_line_handler does, but that one is not | |
3186 | involved in execution of breakpoint commands. So, we | |
3187 | can now execute breakpoint commands. It should be | |
3188 | noted that making execute_command do bpstat actions is | |
3189 | not an option -- in this case we'll have recursive | |
3190 | invocation of bpstat for each breakpoint with a | |
3191 | command, and can easily blow up GDB stack. Instead, we | |
3192 | return true, which will trigger the caller to recall us | |
3193 | with the new stop_bpstat. */ | |
3194 | again = 1; | |
3195 | break; | |
32c1e744 | 3196 | } |
c906108c | 3197 | } |
c2b8ed2c | 3198 | do_cleanups (old_chain); |
347bddb7 PA |
3199 | return again; |
3200 | } | |
3201 | ||
3202 | void | |
3203 | bpstat_do_actions (void) | |
3204 | { | |
3205 | /* Do any commands attached to breakpoint we are stopped at. */ | |
3206 | while (!ptid_equal (inferior_ptid, null_ptid) | |
3207 | && target_has_execution | |
3208 | && !is_exited (inferior_ptid) | |
3209 | && !is_executing (inferior_ptid)) | |
3210 | /* Since in sync mode, bpstat_do_actions may resume the inferior, | |
3211 | and only return when it is stopped at the next breakpoint, we | |
3212 | keep doing breakpoint actions until it returns false to | |
3213 | indicate the inferior was not resumed. */ | |
16c381f0 | 3214 | if (!bpstat_do_actions_1 (&inferior_thread ()->control.stop_bpstat)) |
347bddb7 | 3215 | break; |
c906108c SS |
3216 | } |
3217 | ||
fa4727a6 DJ |
3218 | /* Print out the (old or new) value associated with a watchpoint. */ |
3219 | ||
3220 | static void | |
3221 | watchpoint_value_print (struct value *val, struct ui_file *stream) | |
3222 | { | |
3223 | if (val == NULL) | |
3224 | fprintf_unfiltered (stream, _("<unreadable>")); | |
3225 | else | |
79a45b7d TT |
3226 | { |
3227 | struct value_print_options opts; | |
3228 | get_user_print_options (&opts); | |
3229 | value_print (val, stream, &opts); | |
3230 | } | |
fa4727a6 DJ |
3231 | } |
3232 | ||
e514a9d6 | 3233 | /* This is the normal print function for a bpstat. In the future, |
c906108c | 3234 | much of this logic could (should?) be moved to bpstat_stop_status, |
e514a9d6 JM |
3235 | by having it set different print_it values. |
3236 | ||
3237 | Current scheme: When we stop, bpstat_print() is called. It loops | |
3238 | through the bpstat list of things causing this stop, calling the | |
4a64f543 | 3239 | print_bp_stop_message function on each one. The behavior of the |
e514a9d6 | 3240 | print_bp_stop_message function depends on the print_it field of |
4a64f543 | 3241 | bpstat. If such field so indicates, call this function here. |
e514a9d6 JM |
3242 | |
3243 | Return values from this routine (ultimately used by bpstat_print() | |
3244 | and normal_stop() to decide what to do): | |
3245 | PRINT_NOTHING: Means we already printed all we needed to print, | |
3246 | don't print anything else. | |
3247 | PRINT_SRC_ONLY: Means we printed something, and we do *not* desire | |
3248 | that something to be followed by a location. | |
3249 | PRINT_SCR_AND_LOC: Means we printed something, and we *do* desire | |
3250 | that something to be followed by a location. | |
3251 | PRINT_UNKNOWN: Means we printed nothing or we need to do some more | |
3252 | analysis. */ | |
c906108c | 3253 | |
917317f4 | 3254 | static enum print_stop_action |
fba45db2 | 3255 | print_it_typical (bpstat bs) |
c906108c | 3256 | { |
f7545552 | 3257 | struct cleanup *old_chain; |
4f8d1dc6 | 3258 | struct breakpoint *b; |
89f9893c | 3259 | const struct bp_location *bl; |
8b93c638 | 3260 | struct ui_stream *stb; |
f7545552 TT |
3261 | int bp_temp = 0; |
3262 | enum print_stop_action result; | |
3263 | ||
c906108c SS |
3264 | /* bs->breakpoint_at can be NULL if it was a momentary breakpoint |
3265 | which has since been deleted. */ | |
e514a9d6 | 3266 | if (bs->breakpoint_at == NULL) |
917317f4 | 3267 | return PRINT_UNKNOWN; |
2bdf28a0 | 3268 | |
f431efe5 PA |
3269 | gdb_assert (bs->bp_location_at != NULL); |
3270 | ||
3271 | bl = bs->bp_location_at; | |
3272 | b = bs->breakpoint_at; | |
c906108c | 3273 | |
f7545552 TT |
3274 | stb = ui_out_stream_new (uiout); |
3275 | old_chain = make_cleanup_ui_out_stream_delete (stb); | |
3276 | ||
4f8d1dc6 | 3277 | switch (b->type) |
c906108c | 3278 | { |
e514a9d6 JM |
3279 | case bp_breakpoint: |
3280 | case bp_hardware_breakpoint: | |
f431efe5 | 3281 | bp_temp = b->disposition == disp_del; |
0d381245 VP |
3282 | if (bl->address != bl->requested_address) |
3283 | breakpoint_adjustment_warning (bl->requested_address, | |
3284 | bl->address, | |
4f8d1dc6 VP |
3285 | b->number, 1); |
3286 | annotate_breakpoint (b->number); | |
2cec12e5 AR |
3287 | if (bp_temp) |
3288 | ui_out_text (uiout, "\nTemporary breakpoint "); | |
3289 | else | |
3290 | ui_out_text (uiout, "\nBreakpoint "); | |
9dc5e2a9 | 3291 | if (ui_out_is_mi_like_p (uiout)) |
2cec12e5 AR |
3292 | { |
3293 | ui_out_field_string (uiout, "reason", | |
3294 | async_reason_lookup (EXEC_ASYNC_BREAKPOINT_HIT)); | |
3295 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); | |
3296 | } | |
4f8d1dc6 | 3297 | ui_out_field_int (uiout, "bkptno", b->number); |
8b93c638 | 3298 | ui_out_text (uiout, ", "); |
f7545552 | 3299 | result = PRINT_SRC_AND_LOC; |
e514a9d6 JM |
3300 | break; |
3301 | ||
3302 | case bp_shlib_event: | |
917317f4 JM |
3303 | /* Did we stop because the user set the stop_on_solib_events |
3304 | variable? (If so, we report this as a generic, "Stopped due | |
3305 | to shlib event" message.) */ | |
a3f17187 | 3306 | printf_filtered (_("Stopped due to shared library event\n")); |
f7545552 | 3307 | result = PRINT_NOTHING; |
e514a9d6 JM |
3308 | break; |
3309 | ||
c4093a6a | 3310 | case bp_thread_event: |
4a64f543 | 3311 | /* Not sure how we will get here. |
c4093a6a | 3312 | GDB should not stop for these breakpoints. */ |
a3f17187 | 3313 | printf_filtered (_("Thread Event Breakpoint: gdb should not stop!\n")); |
f7545552 | 3314 | result = PRINT_NOTHING; |
c4093a6a JM |
3315 | break; |
3316 | ||
1900040c | 3317 | case bp_overlay_event: |
4a64f543 | 3318 | /* By analogy with the thread event, GDB should not stop for these. */ |
a3f17187 | 3319 | printf_filtered (_("Overlay Event Breakpoint: gdb should not stop!\n")); |
f7545552 | 3320 | result = PRINT_NOTHING; |
1900040c MS |
3321 | break; |
3322 | ||
0fd8e87f UW |
3323 | case bp_longjmp_master: |
3324 | /* These should never be enabled. */ | |
3325 | printf_filtered (_("Longjmp Master Breakpoint: gdb should not stop!\n")); | |
3326 | result = PRINT_NOTHING; | |
3327 | break; | |
3328 | ||
aa7d318d TT |
3329 | case bp_std_terminate_master: |
3330 | /* These should never be enabled. */ | |
3e43a32a MS |
3331 | printf_filtered (_("std::terminate Master Breakpoint: " |
3332 | "gdb should not stop!\n")); | |
aa7d318d TT |
3333 | result = PRINT_NOTHING; |
3334 | break; | |
3335 | ||
186c406b TT |
3336 | case bp_exception_master: |
3337 | /* These should never be enabled. */ | |
3e43a32a MS |
3338 | printf_filtered (_("Exception Master Breakpoint: " |
3339 | "gdb should not stop!\n")); | |
186c406b TT |
3340 | result = PRINT_NOTHING; |
3341 | break; | |
3342 | ||
e514a9d6 JM |
3343 | case bp_watchpoint: |
3344 | case bp_hardware_watchpoint: | |
fa4727a6 DJ |
3345 | annotate_watchpoint (b->number); |
3346 | if (ui_out_is_mi_like_p (uiout)) | |
3347 | ui_out_field_string | |
3348 | (uiout, "reason", | |
3349 | async_reason_lookup (EXEC_ASYNC_WATCHPOINT_TRIGGER)); | |
3350 | mention (b); | |
f7545552 | 3351 | make_cleanup_ui_out_tuple_begin_end (uiout, "value"); |
fa4727a6 DJ |
3352 | ui_out_text (uiout, "\nOld value = "); |
3353 | watchpoint_value_print (bs->old_val, stb->stream); | |
3354 | ui_out_field_stream (uiout, "old", stb); | |
3355 | ui_out_text (uiout, "\nNew value = "); | |
3356 | watchpoint_value_print (b->val, stb->stream); | |
3357 | ui_out_field_stream (uiout, "new", stb); | |
fa4727a6 | 3358 | ui_out_text (uiout, "\n"); |
e514a9d6 | 3359 | /* More than one watchpoint may have been triggered. */ |
f7545552 | 3360 | result = PRINT_UNKNOWN; |
e514a9d6 JM |
3361 | break; |
3362 | ||
3363 | case bp_read_watchpoint: | |
9dc5e2a9 | 3364 | if (ui_out_is_mi_like_p (uiout)) |
034dad6f BR |
3365 | ui_out_field_string |
3366 | (uiout, "reason", | |
3367 | async_reason_lookup (EXEC_ASYNC_READ_WATCHPOINT_TRIGGER)); | |
4f8d1dc6 | 3368 | mention (b); |
f7545552 | 3369 | make_cleanup_ui_out_tuple_begin_end (uiout, "value"); |
8b93c638 | 3370 | ui_out_text (uiout, "\nValue = "); |
fa4727a6 | 3371 | watchpoint_value_print (b->val, stb->stream); |
8b93c638 | 3372 | ui_out_field_stream (uiout, "value", stb); |
8b93c638 | 3373 | ui_out_text (uiout, "\n"); |
f7545552 | 3374 | result = PRINT_UNKNOWN; |
e514a9d6 JM |
3375 | break; |
3376 | ||
3377 | case bp_access_watchpoint: | |
fa4727a6 | 3378 | if (bs->old_val != NULL) |
8b93c638 | 3379 | { |
4f8d1dc6 | 3380 | annotate_watchpoint (b->number); |
9dc5e2a9 | 3381 | if (ui_out_is_mi_like_p (uiout)) |
034dad6f BR |
3382 | ui_out_field_string |
3383 | (uiout, "reason", | |
3384 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); | |
4f8d1dc6 | 3385 | mention (b); |
f7545552 | 3386 | make_cleanup_ui_out_tuple_begin_end (uiout, "value"); |
8b93c638 | 3387 | ui_out_text (uiout, "\nOld value = "); |
fa4727a6 | 3388 | watchpoint_value_print (bs->old_val, stb->stream); |
8b93c638 | 3389 | ui_out_field_stream (uiout, "old", stb); |
8b93c638 JM |
3390 | ui_out_text (uiout, "\nNew value = "); |
3391 | } | |
3392 | else | |
3393 | { | |
4f8d1dc6 | 3394 | mention (b); |
9dc5e2a9 | 3395 | if (ui_out_is_mi_like_p (uiout)) |
034dad6f BR |
3396 | ui_out_field_string |
3397 | (uiout, "reason", | |
3398 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); | |
f7545552 | 3399 | make_cleanup_ui_out_tuple_begin_end (uiout, "value"); |
8b93c638 JM |
3400 | ui_out_text (uiout, "\nValue = "); |
3401 | } | |
fa4727a6 | 3402 | watchpoint_value_print (b->val, stb->stream); |
8b93c638 | 3403 | ui_out_field_stream (uiout, "new", stb); |
8b93c638 | 3404 | ui_out_text (uiout, "\n"); |
f7545552 | 3405 | result = PRINT_UNKNOWN; |
e514a9d6 | 3406 | break; |
4ce44c66 | 3407 | |
e514a9d6 | 3408 | /* Fall through, we don't deal with these types of breakpoints |
4a64f543 | 3409 | here. */ |
e514a9d6 | 3410 | |
11cf8741 | 3411 | case bp_finish: |
9dc5e2a9 | 3412 | if (ui_out_is_mi_like_p (uiout)) |
034dad6f BR |
3413 | ui_out_field_string |
3414 | (uiout, "reason", | |
3415 | async_reason_lookup (EXEC_ASYNC_FUNCTION_FINISHED)); | |
f7545552 | 3416 | result = PRINT_UNKNOWN; |
8b93c638 JM |
3417 | break; |
3418 | ||
e514a9d6 | 3419 | case bp_until: |
9dc5e2a9 | 3420 | if (ui_out_is_mi_like_p (uiout)) |
1fbc2a49 NR |
3421 | ui_out_field_string |
3422 | (uiout, "reason", | |
3423 | async_reason_lookup (EXEC_ASYNC_LOCATION_REACHED)); | |
f7545552 | 3424 | result = PRINT_UNKNOWN; |
8b93c638 JM |
3425 | break; |
3426 | ||
c2d11a7d | 3427 | case bp_none: |
e514a9d6 JM |
3428 | case bp_longjmp: |
3429 | case bp_longjmp_resume: | |
186c406b TT |
3430 | case bp_exception: |
3431 | case bp_exception_resume: | |
e514a9d6 | 3432 | case bp_step_resume: |
e514a9d6 JM |
3433 | case bp_watchpoint_scope: |
3434 | case bp_call_dummy: | |
aa7d318d | 3435 | case bp_std_terminate: |
1042e4c0 | 3436 | case bp_tracepoint: |
7a697b8d | 3437 | case bp_fast_tracepoint: |
4efc6507 | 3438 | case bp_jit_event: |
e514a9d6 | 3439 | default: |
f7545552 TT |
3440 | result = PRINT_UNKNOWN; |
3441 | break; | |
e514a9d6 | 3442 | } |
f7545552 TT |
3443 | |
3444 | do_cleanups (old_chain); | |
3445 | return result; | |
e514a9d6 JM |
3446 | } |
3447 | ||
3448 | /* Generic routine for printing messages indicating why we | |
4a64f543 | 3449 | stopped. The behavior of this function depends on the value |
e514a9d6 JM |
3450 | 'print_it' in the bpstat structure. Under some circumstances we |
3451 | may decide not to print anything here and delegate the task to | |
4a64f543 | 3452 | normal_stop(). */ |
e514a9d6 JM |
3453 | |
3454 | static enum print_stop_action | |
3455 | print_bp_stop_message (bpstat bs) | |
3456 | { | |
3457 | switch (bs->print_it) | |
3458 | { | |
3459 | case print_it_noop: | |
4a64f543 | 3460 | /* Nothing should be printed for this bpstat entry. */ |
e514a9d6 JM |
3461 | return PRINT_UNKNOWN; |
3462 | break; | |
3463 | ||
3464 | case print_it_done: | |
3465 | /* We still want to print the frame, but we already printed the | |
4a64f543 | 3466 | relevant messages. */ |
e514a9d6 JM |
3467 | return PRINT_SRC_AND_LOC; |
3468 | break; | |
3469 | ||
3470 | case print_it_normal: | |
4f8d1dc6 | 3471 | { |
f431efe5 PA |
3472 | struct breakpoint *b = bs->breakpoint_at; |
3473 | ||
4f8d1dc6 VP |
3474 | /* Normal case. Call the breakpoint's print_it method, or |
3475 | print_it_typical. */ | |
3476 | /* FIXME: how breakpoint can ever be NULL here? */ | |
3477 | if (b != NULL && b->ops != NULL && b->ops->print_it != NULL) | |
3478 | return b->ops->print_it (b); | |
3479 | else | |
3480 | return print_it_typical (bs); | |
3481 | } | |
3482 | break; | |
3086aeae | 3483 | |
e514a9d6 | 3484 | default: |
8e65ff28 | 3485 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 3486 | _("print_bp_stop_message: unrecognized enum value")); |
e514a9d6 | 3487 | break; |
c906108c | 3488 | } |
c906108c SS |
3489 | } |
3490 | ||
e514a9d6 JM |
3491 | /* Print a message indicating what happened. This is called from |
3492 | normal_stop(). The input to this routine is the head of the bpstat | |
3493 | list - a list of the eventpoints that caused this stop. This | |
3494 | routine calls the generic print routine for printing a message | |
3495 | about reasons for stopping. This will print (for example) the | |
3496 | "Breakpoint n," part of the output. The return value of this | |
3497 | routine is one of: | |
c906108c | 3498 | |
4a64f543 | 3499 | PRINT_UNKNOWN: Means we printed nothing. |
917317f4 | 3500 | PRINT_SRC_AND_LOC: Means we printed something, and expect subsequent |
4a64f543 | 3501 | code to print the location. An example is |
c5aa993b JM |
3502 | "Breakpoint 1, " which should be followed by |
3503 | the location. | |
917317f4 | 3504 | PRINT_SRC_ONLY: Means we printed something, but there is no need |
c5aa993b JM |
3505 | to also print the location part of the message. |
3506 | An example is the catch/throw messages, which | |
4a64f543 | 3507 | don't require a location appended to the end. |
917317f4 | 3508 | PRINT_NOTHING: We have done some printing and we don't need any |
4a64f543 | 3509 | further info to be printed. */ |
c906108c | 3510 | |
917317f4 | 3511 | enum print_stop_action |
fba45db2 | 3512 | bpstat_print (bpstat bs) |
c906108c SS |
3513 | { |
3514 | int val; | |
c5aa993b | 3515 | |
c906108c | 3516 | /* Maybe another breakpoint in the chain caused us to stop. |
53a5351d JM |
3517 | (Currently all watchpoints go on the bpstat whether hit or not. |
3518 | That probably could (should) be changed, provided care is taken | |
c906108c | 3519 | with respect to bpstat_explains_signal). */ |
e514a9d6 JM |
3520 | for (; bs; bs = bs->next) |
3521 | { | |
3522 | val = print_bp_stop_message (bs); | |
3523 | if (val == PRINT_SRC_ONLY | |
3524 | || val == PRINT_SRC_AND_LOC | |
3525 | || val == PRINT_NOTHING) | |
3526 | return val; | |
3527 | } | |
c906108c | 3528 | |
e514a9d6 | 3529 | /* We reached the end of the chain, or we got a null BS to start |
4a64f543 | 3530 | with and nothing was printed. */ |
917317f4 | 3531 | return PRINT_UNKNOWN; |
c906108c SS |
3532 | } |
3533 | ||
4a64f543 MS |
3534 | /* Evaluate the expression EXP and return 1 if value is zero. This is |
3535 | used inside a catch_errors to evaluate the breakpoint condition. | |
3536 | The argument is a "struct expression *" that has been cast to a | |
3537 | "char *" to make it pass through catch_errors. */ | |
c906108c SS |
3538 | |
3539 | static int | |
4efb68b1 | 3540 | breakpoint_cond_eval (void *exp) |
c906108c | 3541 | { |
278cd55f | 3542 | struct value *mark = value_mark (); |
c5aa993b | 3543 | int i = !value_true (evaluate_expression ((struct expression *) exp)); |
cc59ec59 | 3544 | |
c906108c SS |
3545 | value_free_to_mark (mark); |
3546 | return i; | |
3547 | } | |
3548 | ||
5760d0ab | 3549 | /* Allocate a new bpstat. Link it to the FIFO list by BS_LINK_POINTER. */ |
c906108c SS |
3550 | |
3551 | static bpstat | |
5760d0ab | 3552 | bpstat_alloc (struct bp_location *bl, bpstat **bs_link_pointer) |
c906108c SS |
3553 | { |
3554 | bpstat bs; | |
3555 | ||
3556 | bs = (bpstat) xmalloc (sizeof (*bs)); | |
5760d0ab JK |
3557 | bs->next = NULL; |
3558 | **bs_link_pointer = bs; | |
3559 | *bs_link_pointer = &bs->next; | |
f431efe5 PA |
3560 | bs->breakpoint_at = bl->owner; |
3561 | bs->bp_location_at = bl; | |
3562 | incref_bp_location (bl); | |
c906108c SS |
3563 | /* If the condition is false, etc., don't do the commands. */ |
3564 | bs->commands = NULL; | |
9add0f1b | 3565 | bs->commands_left = NULL; |
c906108c SS |
3566 | bs->old_val = NULL; |
3567 | bs->print_it = print_it_normal; | |
3568 | return bs; | |
3569 | } | |
3570 | \f | |
d983da9c DJ |
3571 | /* The target has stopped with waitstatus WS. Check if any hardware |
3572 | watchpoints have triggered, according to the target. */ | |
3573 | ||
3574 | int | |
3575 | watchpoints_triggered (struct target_waitstatus *ws) | |
3576 | { | |
d92524f1 | 3577 | int stopped_by_watchpoint = target_stopped_by_watchpoint (); |
d983da9c DJ |
3578 | CORE_ADDR addr; |
3579 | struct breakpoint *b; | |
3580 | ||
3581 | if (!stopped_by_watchpoint) | |
3582 | { | |
3583 | /* We were not stopped by a watchpoint. Mark all watchpoints | |
3584 | as not triggered. */ | |
3585 | ALL_BREAKPOINTS (b) | |
cc60f2e3 | 3586 | if (is_hardware_watchpoint (b)) |
d983da9c DJ |
3587 | b->watchpoint_triggered = watch_triggered_no; |
3588 | ||
3589 | return 0; | |
3590 | } | |
3591 | ||
3592 | if (!target_stopped_data_address (¤t_target, &addr)) | |
3593 | { | |
3594 | /* We were stopped by a watchpoint, but we don't know where. | |
3595 | Mark all watchpoints as unknown. */ | |
3596 | ALL_BREAKPOINTS (b) | |
cc60f2e3 | 3597 | if (is_hardware_watchpoint (b)) |
d983da9c DJ |
3598 | b->watchpoint_triggered = watch_triggered_unknown; |
3599 | ||
3600 | return stopped_by_watchpoint; | |
3601 | } | |
3602 | ||
3603 | /* The target could report the data address. Mark watchpoints | |
3604 | affected by this data address as triggered, and all others as not | |
3605 | triggered. */ | |
3606 | ||
3607 | ALL_BREAKPOINTS (b) | |
cc60f2e3 | 3608 | if (is_hardware_watchpoint (b)) |
d983da9c | 3609 | { |
a5606eee | 3610 | struct bp_location *loc; |
d983da9c DJ |
3611 | |
3612 | b->watchpoint_triggered = watch_triggered_no; | |
a5606eee VP |
3613 | for (loc = b->loc; loc; loc = loc->next) |
3614 | /* Exact match not required. Within range is | |
3615 | sufficient. */ | |
5009afc5 AS |
3616 | if (target_watchpoint_addr_within_range (¤t_target, |
3617 | addr, loc->address, | |
3618 | loc->length)) | |
a5606eee VP |
3619 | { |
3620 | b->watchpoint_triggered = watch_triggered_yes; | |
3621 | break; | |
3622 | } | |
d983da9c DJ |
3623 | } |
3624 | ||
3625 | return 1; | |
3626 | } | |
3627 | ||
c906108c SS |
3628 | /* Possible return values for watchpoint_check (this can't be an enum |
3629 | because of check_errors). */ | |
3630 | /* The watchpoint has been deleted. */ | |
3631 | #define WP_DELETED 1 | |
3632 | /* The value has changed. */ | |
3633 | #define WP_VALUE_CHANGED 2 | |
3634 | /* The value has not changed. */ | |
3635 | #define WP_VALUE_NOT_CHANGED 3 | |
60e1c644 PA |
3636 | /* Ignore this watchpoint, no matter if the value changed or not. */ |
3637 | #define WP_IGNORE 4 | |
c906108c SS |
3638 | |
3639 | #define BP_TEMPFLAG 1 | |
3640 | #define BP_HARDWAREFLAG 2 | |
3641 | ||
4a64f543 MS |
3642 | /* Evaluate watchpoint condition expression and check if its value |
3643 | changed. | |
553e4c11 JB |
3644 | |
3645 | P should be a pointer to struct bpstat, but is defined as a void * | |
3646 | in order for this function to be usable with catch_errors. */ | |
c906108c SS |
3647 | |
3648 | static int | |
4efb68b1 | 3649 | watchpoint_check (void *p) |
c906108c SS |
3650 | { |
3651 | bpstat bs = (bpstat) p; | |
3652 | struct breakpoint *b; | |
3653 | struct frame_info *fr; | |
3654 | int within_current_scope; | |
3655 | ||
f431efe5 | 3656 | /* BS is built from an existing struct breakpoint. */ |
2bdf28a0 | 3657 | gdb_assert (bs->breakpoint_at != NULL); |
f431efe5 | 3658 | b = bs->breakpoint_at; |
c906108c | 3659 | |
f6bc2008 PA |
3660 | /* If this is a local watchpoint, we only want to check if the |
3661 | watchpoint frame is in scope if the current thread is the thread | |
3662 | that was used to create the watchpoint. */ | |
3663 | if (!watchpoint_in_thread_scope (b)) | |
60e1c644 | 3664 | return WP_IGNORE; |
f6bc2008 | 3665 | |
c906108c SS |
3666 | if (b->exp_valid_block == NULL) |
3667 | within_current_scope = 1; | |
3668 | else | |
3669 | { | |
edb3359d DJ |
3670 | struct frame_info *frame = get_current_frame (); |
3671 | struct gdbarch *frame_arch = get_frame_arch (frame); | |
3672 | CORE_ADDR frame_pc = get_frame_pc (frame); | |
3673 | ||
4a64f543 MS |
3674 | /* in_function_epilogue_p() returns a non-zero value if we're |
3675 | still in the function but the stack frame has already been | |
3676 | invalidated. Since we can't rely on the values of local | |
3677 | variables after the stack has been destroyed, we are treating | |
3678 | the watchpoint in that state as `not changed' without further | |
3679 | checking. Don't mark watchpoints as changed if the current | |
3680 | frame is in an epilogue - even if they are in some other | |
3681 | frame, our view of the stack is likely to be wrong and | |
3682 | frame_find_by_id could error out. */ | |
a0f49112 | 3683 | if (gdbarch_in_function_epilogue_p (frame_arch, frame_pc)) |
60e1c644 | 3684 | return WP_IGNORE; |
a0f49112 | 3685 | |
101dcfbe | 3686 | fr = frame_find_by_id (b->watchpoint_frame); |
c906108c | 3687 | within_current_scope = (fr != NULL); |
69fbadd5 DJ |
3688 | |
3689 | /* If we've gotten confused in the unwinder, we might have | |
3690 | returned a frame that can't describe this variable. */ | |
edb3359d DJ |
3691 | if (within_current_scope) |
3692 | { | |
3693 | struct symbol *function; | |
3694 | ||
3695 | function = get_frame_function (fr); | |
3696 | if (function == NULL | |
3697 | || !contained_in (b->exp_valid_block, | |
3698 | SYMBOL_BLOCK_VALUE (function))) | |
3699 | within_current_scope = 0; | |
3700 | } | |
69fbadd5 | 3701 | |
edb3359d | 3702 | if (within_current_scope) |
c906108c SS |
3703 | /* If we end up stopping, the current frame will get selected |
3704 | in normal_stop. So this call to select_frame won't affect | |
3705 | the user. */ | |
0f7d239c | 3706 | select_frame (fr); |
c906108c | 3707 | } |
c5aa993b | 3708 | |
c906108c SS |
3709 | if (within_current_scope) |
3710 | { | |
4a64f543 MS |
3711 | /* We use value_{,free_to_}mark because it could be a *long* |
3712 | time before we return to the command level and call | |
3713 | free_all_values. We can't call free_all_values because we | |
3714 | might be in the middle of evaluating a function call. */ | |
c906108c | 3715 | |
0cf6dd15 | 3716 | int pc = 0; |
278cd55f | 3717 | struct value *mark = value_mark (); |
fa4727a6 DJ |
3718 | struct value *new_val; |
3719 | ||
0cf6dd15 | 3720 | fetch_subexp_value (b->exp, &pc, &new_val, NULL, NULL); |
218d2fc6 | 3721 | |
4a64f543 MS |
3722 | /* We use value_equal_contents instead of value_equal because |
3723 | the latter coerces an array to a pointer, thus comparing just | |
3724 | the address of the array instead of its contents. This is | |
3725 | not what we want. */ | |
fa4727a6 | 3726 | if ((b->val != NULL) != (new_val != NULL) |
218d2fc6 | 3727 | || (b->val != NULL && !value_equal_contents (b->val, new_val))) |
c906108c | 3728 | { |
fa4727a6 DJ |
3729 | if (new_val != NULL) |
3730 | { | |
3731 | release_value (new_val); | |
3732 | value_free_to_mark (mark); | |
3733 | } | |
c906108c SS |
3734 | bs->old_val = b->val; |
3735 | b->val = new_val; | |
fa4727a6 | 3736 | b->val_valid = 1; |
c906108c SS |
3737 | return WP_VALUE_CHANGED; |
3738 | } | |
3739 | else | |
3740 | { | |
60e1c644 | 3741 | /* Nothing changed. */ |
c906108c | 3742 | value_free_to_mark (mark); |
c906108c SS |
3743 | return WP_VALUE_NOT_CHANGED; |
3744 | } | |
3745 | } | |
3746 | else | |
3747 | { | |
3748 | /* This seems like the only logical thing to do because | |
c5aa993b JM |
3749 | if we temporarily ignored the watchpoint, then when |
3750 | we reenter the block in which it is valid it contains | |
3751 | garbage (in the case of a function, it may have two | |
3752 | garbage values, one before and one after the prologue). | |
3753 | So we can't even detect the first assignment to it and | |
3754 | watch after that (since the garbage may or may not equal | |
3755 | the first value assigned). */ | |
4ce44c66 JM |
3756 | /* We print all the stop information in print_it_typical(), but |
3757 | in this case, by the time we call print_it_typical() this bp | |
4a64f543 MS |
3758 | will be deleted already. So we have no choice but print the |
3759 | information here. */ | |
9dc5e2a9 | 3760 | if (ui_out_is_mi_like_p (uiout)) |
034dad6f BR |
3761 | ui_out_field_string |
3762 | (uiout, "reason", async_reason_lookup (EXEC_ASYNC_WATCHPOINT_SCOPE)); | |
8b93c638 | 3763 | ui_out_text (uiout, "\nWatchpoint "); |
4f8d1dc6 | 3764 | ui_out_field_int (uiout, "wpnum", b->number); |
3e43a32a MS |
3765 | ui_out_text (uiout, |
3766 | " deleted because the program has left the block in\n\ | |
8b93c638 | 3767 | which its expression is valid.\n"); |
4ce44c66 | 3768 | |
c906108c | 3769 | if (b->related_breakpoint) |
60e1c644 PA |
3770 | { |
3771 | b->related_breakpoint->disposition = disp_del_at_next_stop; | |
3772 | b->related_breakpoint->related_breakpoint = NULL; | |
3773 | b->related_breakpoint = NULL; | |
3774 | } | |
b5de0fa7 | 3775 | b->disposition = disp_del_at_next_stop; |
c906108c SS |
3776 | |
3777 | return WP_DELETED; | |
3778 | } | |
3779 | } | |
3780 | ||
18a18393 VP |
3781 | /* Return true if it looks like target has stopped due to hitting |
3782 | breakpoint location BL. This function does not check if we | |
3783 | should stop, only if BL explains the stop. */ | |
3784 | static int | |
6c95b8df PA |
3785 | bpstat_check_location (const struct bp_location *bl, |
3786 | struct address_space *aspace, CORE_ADDR bp_addr) | |
18a18393 VP |
3787 | { |
3788 | struct breakpoint *b = bl->owner; | |
3789 | ||
2bdf28a0 JK |
3790 | /* BL is from existing struct breakpoint. */ |
3791 | gdb_assert (b != NULL); | |
3792 | ||
e8595ef6 SS |
3793 | /* By definition, the inferior does not report stops at |
3794 | tracepoints. */ | |
d77f58be | 3795 | if (is_tracepoint (b)) |
e8595ef6 SS |
3796 | return 0; |
3797 | ||
cc60f2e3 | 3798 | if (!is_watchpoint (b) |
18a18393 | 3799 | && b->type != bp_hardware_breakpoint |
fe798b75 | 3800 | && b->type != bp_catchpoint) /* a non-watchpoint bp */ |
18a18393 | 3801 | { |
6c95b8df PA |
3802 | if (!breakpoint_address_match (bl->pspace->aspace, bl->address, |
3803 | aspace, bp_addr)) | |
18a18393 VP |
3804 | return 0; |
3805 | if (overlay_debugging /* unmapped overlay section */ | |
35df4500 | 3806 | && section_is_overlay (bl->section) |
18a18393 VP |
3807 | && !section_is_mapped (bl->section)) |
3808 | return 0; | |
3809 | } | |
cc60f2e3 | 3810 | |
18a18393 VP |
3811 | /* Continuable hardware watchpoints are treated as non-existent if the |
3812 | reason we stopped wasn't a hardware watchpoint (we didn't stop on | |
3813 | some data address). Otherwise gdb won't stop on a break instruction | |
3814 | in the code (not from a breakpoint) when a hardware watchpoint has | |
3815 | been defined. Also skip watchpoints which we know did not trigger | |
3816 | (did not match the data address). */ | |
cc60f2e3 PA |
3817 | |
3818 | if (is_hardware_watchpoint (b) | |
18a18393 VP |
3819 | && b->watchpoint_triggered == watch_triggered_no) |
3820 | return 0; | |
3821 | ||
3822 | if (b->type == bp_hardware_breakpoint) | |
3823 | { | |
3824 | if (bl->address != bp_addr) | |
3825 | return 0; | |
3826 | if (overlay_debugging /* unmapped overlay section */ | |
35df4500 | 3827 | && section_is_overlay (bl->section) |
18a18393 VP |
3828 | && !section_is_mapped (bl->section)) |
3829 | return 0; | |
3830 | } | |
ce78b96d | 3831 | |
ce78b96d JB |
3832 | if (b->type == bp_catchpoint) |
3833 | { | |
3834 | gdb_assert (b->ops != NULL && b->ops->breakpoint_hit != NULL); | |
3835 | if (!b->ops->breakpoint_hit (b)) | |
3836 | return 0; | |
3837 | } | |
3838 | ||
18a18393 VP |
3839 | return 1; |
3840 | } | |
3841 | ||
3842 | /* If BS refers to a watchpoint, determine if the watched values | |
3843 | has actually changed, and we should stop. If not, set BS->stop | |
3844 | to 0. */ | |
3845 | static void | |
3846 | bpstat_check_watchpoint (bpstat bs) | |
3847 | { | |
2bdf28a0 JK |
3848 | const struct bp_location *bl; |
3849 | struct breakpoint *b; | |
3850 | ||
3851 | /* BS is built for existing struct breakpoint. */ | |
f431efe5 | 3852 | bl = bs->bp_location_at; |
2bdf28a0 | 3853 | gdb_assert (bl != NULL); |
f431efe5 | 3854 | b = bs->breakpoint_at; |
2bdf28a0 | 3855 | gdb_assert (b != NULL); |
18a18393 | 3856 | |
cc60f2e3 | 3857 | if (is_watchpoint (b)) |
18a18393 | 3858 | { |
18a18393 VP |
3859 | int must_check_value = 0; |
3860 | ||
3861 | if (b->type == bp_watchpoint) | |
3862 | /* For a software watchpoint, we must always check the | |
3863 | watched value. */ | |
3864 | must_check_value = 1; | |
3865 | else if (b->watchpoint_triggered == watch_triggered_yes) | |
3866 | /* We have a hardware watchpoint (read, write, or access) | |
3867 | and the target earlier reported an address watched by | |
3868 | this watchpoint. */ | |
3869 | must_check_value = 1; | |
3870 | else if (b->watchpoint_triggered == watch_triggered_unknown | |
3871 | && b->type == bp_hardware_watchpoint) | |
3872 | /* We were stopped by a hardware watchpoint, but the target could | |
3873 | not report the data address. We must check the watchpoint's | |
3874 | value. Access and read watchpoints are out of luck; without | |
3875 | a data address, we can't figure it out. */ | |
3876 | must_check_value = 1; | |
3877 | ||
3878 | if (must_check_value) | |
3879 | { | |
3e43a32a MS |
3880 | char *message |
3881 | = xstrprintf ("Error evaluating expression for watchpoint %d\n", | |
3882 | b->number); | |
18a18393 VP |
3883 | struct cleanup *cleanups = make_cleanup (xfree, message); |
3884 | int e = catch_errors (watchpoint_check, bs, message, | |
3885 | RETURN_MASK_ALL); | |
3886 | do_cleanups (cleanups); | |
3887 | switch (e) | |
3888 | { | |
3889 | case WP_DELETED: | |
3890 | /* We've already printed what needs to be printed. */ | |
3891 | bs->print_it = print_it_done; | |
3892 | /* Stop. */ | |
3893 | break; | |
60e1c644 PA |
3894 | case WP_IGNORE: |
3895 | bs->print_it = print_it_noop; | |
3896 | bs->stop = 0; | |
3897 | break; | |
18a18393 VP |
3898 | case WP_VALUE_CHANGED: |
3899 | if (b->type == bp_read_watchpoint) | |
3900 | { | |
85d721b8 PA |
3901 | /* There are two cases to consider here: |
3902 | ||
4a64f543 | 3903 | 1. We're watching the triggered memory for reads. |
85d721b8 PA |
3904 | In that case, trust the target, and always report |
3905 | the watchpoint hit to the user. Even though | |
3906 | reads don't cause value changes, the value may | |
3907 | have changed since the last time it was read, and | |
3908 | since we're not trapping writes, we will not see | |
3909 | those, and as such we should ignore our notion of | |
3910 | old value. | |
3911 | ||
4a64f543 | 3912 | 2. We're watching the triggered memory for both |
85d721b8 PA |
3913 | reads and writes. There are two ways this may |
3914 | happen: | |
3915 | ||
4a64f543 | 3916 | 2.1. This is a target that can't break on data |
85d721b8 PA |
3917 | reads only, but can break on accesses (reads or |
3918 | writes), such as e.g., x86. We detect this case | |
3919 | at the time we try to insert read watchpoints. | |
3920 | ||
4a64f543 | 3921 | 2.2. Otherwise, the target supports read |
85d721b8 PA |
3922 | watchpoints, but, the user set an access or write |
3923 | watchpoint watching the same memory as this read | |
3924 | watchpoint. | |
3925 | ||
3926 | If we're watching memory writes as well as reads, | |
3927 | ignore watchpoint hits when we find that the | |
3928 | value hasn't changed, as reads don't cause | |
3929 | changes. This still gives false positives when | |
3930 | the program writes the same value to memory as | |
3931 | what there was already in memory (we will confuse | |
3932 | it for a read), but it's much better than | |
3933 | nothing. */ | |
3934 | ||
3935 | int other_write_watchpoint = 0; | |
3936 | ||
3937 | if (bl->watchpoint_type == hw_read) | |
3938 | { | |
3939 | struct breakpoint *other_b; | |
3940 | ||
3941 | ALL_BREAKPOINTS (other_b) | |
3942 | if ((other_b->type == bp_hardware_watchpoint | |
3943 | || other_b->type == bp_access_watchpoint) | |
3944 | && (other_b->watchpoint_triggered | |
3945 | == watch_triggered_yes)) | |
3946 | { | |
3947 | other_write_watchpoint = 1; | |
3948 | break; | |
3949 | } | |
3950 | } | |
3951 | ||
3952 | if (other_write_watchpoint | |
3953 | || bl->watchpoint_type == hw_access) | |
3954 | { | |
3955 | /* We're watching the same memory for writes, | |
3956 | and the value changed since the last time we | |
3957 | updated it, so this trap must be for a write. | |
3958 | Ignore it. */ | |
3959 | bs->print_it = print_it_noop; | |
3960 | bs->stop = 0; | |
3961 | } | |
18a18393 VP |
3962 | } |
3963 | break; | |
3964 | case WP_VALUE_NOT_CHANGED: | |
3965 | if (b->type == bp_hardware_watchpoint | |
3966 | || b->type == bp_watchpoint) | |
3967 | { | |
3968 | /* Don't stop: write watchpoints shouldn't fire if | |
3969 | the value hasn't changed. */ | |
3970 | bs->print_it = print_it_noop; | |
3971 | bs->stop = 0; | |
3972 | } | |
3973 | /* Stop. */ | |
3974 | break; | |
3975 | default: | |
3976 | /* Can't happen. */ | |
3977 | case 0: | |
3978 | /* Error from catch_errors. */ | |
3979 | printf_filtered (_("Watchpoint %d deleted.\n"), b->number); | |
3980 | if (b->related_breakpoint) | |
3981 | b->related_breakpoint->disposition = disp_del_at_next_stop; | |
3982 | b->disposition = disp_del_at_next_stop; | |
3983 | /* We've already printed what needs to be printed. */ | |
3984 | bs->print_it = print_it_done; | |
3985 | break; | |
3986 | } | |
3987 | } | |
3988 | else /* must_check_value == 0 */ | |
3989 | { | |
3990 | /* This is a case where some watchpoint(s) triggered, but | |
3991 | not at the address of this watchpoint, or else no | |
3992 | watchpoint triggered after all. So don't print | |
3993 | anything for this watchpoint. */ | |
3994 | bs->print_it = print_it_noop; | |
3995 | bs->stop = 0; | |
3996 | } | |
3997 | } | |
3998 | } | |
3999 | ||
4000 | ||
4001 | /* Check conditions (condition proper, frame, thread and ignore count) | |
4002 | of breakpoint referred to by BS. If we should not stop for this | |
4003 | breakpoint, set BS->stop to 0. */ | |
f431efe5 | 4004 | |
18a18393 VP |
4005 | static void |
4006 | bpstat_check_breakpoint_conditions (bpstat bs, ptid_t ptid) | |
4007 | { | |
4008 | int thread_id = pid_to_thread_id (ptid); | |
2bdf28a0 JK |
4009 | const struct bp_location *bl; |
4010 | struct breakpoint *b; | |
4011 | ||
4012 | /* BS is built for existing struct breakpoint. */ | |
f431efe5 | 4013 | bl = bs->bp_location_at; |
2bdf28a0 | 4014 | gdb_assert (bl != NULL); |
f431efe5 | 4015 | b = bs->breakpoint_at; |
2bdf28a0 | 4016 | gdb_assert (b != NULL); |
18a18393 VP |
4017 | |
4018 | if (frame_id_p (b->frame_id) | |
edb3359d | 4019 | && !frame_id_eq (b->frame_id, get_stack_frame_id (get_current_frame ()))) |
18a18393 VP |
4020 | bs->stop = 0; |
4021 | else if (bs->stop) | |
4022 | { | |
4023 | int value_is_zero = 0; | |
60e1c644 PA |
4024 | struct expression *cond; |
4025 | ||
60e1c644 PA |
4026 | if (is_watchpoint (b)) |
4027 | cond = b->cond_exp; | |
4028 | else | |
4029 | cond = bl->cond; | |
4030 | ||
f431efe5 | 4031 | if (cond && b->disposition != disp_del_at_next_stop) |
18a18393 | 4032 | { |
60e1c644 PA |
4033 | int within_current_scope = 1; |
4034 | ||
c5bc3a77 DJ |
4035 | /* We use value_mark and value_free_to_mark because it could |
4036 | be a long time before we return to the command level and | |
4037 | call free_all_values. We can't call free_all_values | |
4038 | because we might be in the middle of evaluating a | |
4039 | function call. */ | |
4040 | struct value *mark = value_mark (); | |
4041 | ||
edb3359d DJ |
4042 | /* Need to select the frame, with all that implies so that |
4043 | the conditions will have the right context. Because we | |
4044 | use the frame, we will not see an inlined function's | |
4045 | variables when we arrive at a breakpoint at the start | |
4046 | of the inlined function; the current frame will be the | |
4047 | call site. */ | |
60e1c644 PA |
4048 | if (!is_watchpoint (b) || b->cond_exp_valid_block == NULL) |
4049 | select_frame (get_current_frame ()); | |
4050 | else | |
4051 | { | |
4052 | struct frame_info *frame; | |
4053 | ||
4054 | /* For local watchpoint expressions, which particular | |
4055 | instance of a local is being watched matters, so we | |
4056 | keep track of the frame to evaluate the expression | |
4057 | in. To evaluate the condition however, it doesn't | |
4058 | really matter which instantiation of the function | |
4059 | where the condition makes sense triggers the | |
4060 | watchpoint. This allows an expression like "watch | |
4061 | global if q > 10" set in `func', catch writes to | |
4062 | global on all threads that call `func', or catch | |
4063 | writes on all recursive calls of `func' by a single | |
4064 | thread. We simply always evaluate the condition in | |
4065 | the innermost frame that's executing where it makes | |
4066 | sense to evaluate the condition. It seems | |
4067 | intuitive. */ | |
4068 | frame = block_innermost_frame (b->cond_exp_valid_block); | |
4069 | if (frame != NULL) | |
4070 | select_frame (frame); | |
4071 | else | |
4072 | within_current_scope = 0; | |
4073 | } | |
4074 | if (within_current_scope) | |
4075 | value_is_zero | |
4076 | = catch_errors (breakpoint_cond_eval, cond, | |
4077 | "Error in testing breakpoint condition:\n", | |
4078 | RETURN_MASK_ALL); | |
4079 | else | |
4080 | { | |
4081 | warning (_("Watchpoint condition cannot be tested " | |
4082 | "in the current scope")); | |
4083 | /* If we failed to set the right context for this | |
4084 | watchpoint, unconditionally report it. */ | |
4085 | value_is_zero = 0; | |
4086 | } | |
4a64f543 | 4087 | /* FIXME-someday, should give breakpoint #. */ |
c5bc3a77 | 4088 | value_free_to_mark (mark); |
18a18393 | 4089 | } |
60e1c644 PA |
4090 | |
4091 | if (cond && value_is_zero) | |
18a18393 VP |
4092 | { |
4093 | bs->stop = 0; | |
4094 | } | |
4095 | else if (b->thread != -1 && b->thread != thread_id) | |
4096 | { | |
4097 | bs->stop = 0; | |
4098 | } | |
4099 | else if (b->ignore_count > 0) | |
4100 | { | |
4101 | b->ignore_count--; | |
4102 | annotate_ignore_count_change (); | |
4103 | bs->stop = 0; | |
4a64f543 | 4104 | /* Increase the hit count even though we don't stop. */ |
18a18393 VP |
4105 | ++(b->hit_count); |
4106 | } | |
4107 | } | |
4108 | } | |
4109 | ||
4110 | ||
9709f61c | 4111 | /* Get a bpstat associated with having just stopped at address |
d983da9c | 4112 | BP_ADDR in thread PTID. |
c906108c | 4113 | |
d983da9c | 4114 | Determine whether we stopped at a breakpoint, etc, or whether we |
4a64f543 MS |
4115 | don't understand this stop. Result is a chain of bpstat's such |
4116 | that: | |
c906108c | 4117 | |
c5aa993b | 4118 | if we don't understand the stop, the result is a null pointer. |
c906108c | 4119 | |
c5aa993b | 4120 | if we understand why we stopped, the result is not null. |
c906108c | 4121 | |
c5aa993b JM |
4122 | Each element of the chain refers to a particular breakpoint or |
4123 | watchpoint at which we have stopped. (We may have stopped for | |
4124 | several reasons concurrently.) | |
c906108c | 4125 | |
c5aa993b JM |
4126 | Each element of the chain has valid next, breakpoint_at, |
4127 | commands, FIXME??? fields. */ | |
c906108c SS |
4128 | |
4129 | bpstat | |
6c95b8df PA |
4130 | bpstat_stop_status (struct address_space *aspace, |
4131 | CORE_ADDR bp_addr, ptid_t ptid) | |
c906108c | 4132 | { |
0d381245 | 4133 | struct breakpoint *b = NULL; |
afe38095 | 4134 | struct bp_location *bl; |
20874c92 | 4135 | struct bp_location *loc; |
5760d0ab JK |
4136 | /* First item of allocated bpstat's. */ |
4137 | bpstat bs_head = NULL, *bs_link = &bs_head; | |
c906108c | 4138 | /* Pointer to the last thing in the chain currently. */ |
5760d0ab | 4139 | bpstat bs; |
20874c92 | 4140 | int ix; |
429374b8 | 4141 | int need_remove_insert; |
f431efe5 | 4142 | int removed_any; |
c906108c | 4143 | |
f431efe5 PA |
4144 | /* First, build the bpstat chain with locations that explain a |
4145 | target stop, while being careful to not set the target running, | |
4146 | as that may invalidate locations (in particular watchpoint | |
4147 | locations are recreated). Resuming will happen here with | |
4148 | breakpoint conditions or watchpoint expressions that include | |
4149 | inferior function calls. */ | |
c5aa993b | 4150 | |
429374b8 JK |
4151 | ALL_BREAKPOINTS (b) |
4152 | { | |
4153 | if (!breakpoint_enabled (b) && b->enable_state != bp_permanent) | |
4154 | continue; | |
a5606eee | 4155 | |
429374b8 JK |
4156 | for (bl = b->loc; bl != NULL; bl = bl->next) |
4157 | { | |
4a64f543 MS |
4158 | /* For hardware watchpoints, we look only at the first |
4159 | location. The watchpoint_check function will work on the | |
4160 | entire expression, not the individual locations. For | |
4161 | read watchpoints, the watchpoints_triggered function has | |
4162 | checked all locations already. */ | |
429374b8 JK |
4163 | if (b->type == bp_hardware_watchpoint && bl != b->loc) |
4164 | break; | |
18a18393 | 4165 | |
429374b8 JK |
4166 | if (bl->shlib_disabled) |
4167 | continue; | |
c5aa993b | 4168 | |
429374b8 JK |
4169 | if (!bpstat_check_location (bl, aspace, bp_addr)) |
4170 | continue; | |
c5aa993b | 4171 | |
4a64f543 MS |
4172 | /* Come here if it's a watchpoint, or if the break address |
4173 | matches. */ | |
c5aa993b | 4174 | |
4a64f543 MS |
4175 | bs = bpstat_alloc (bl, &bs_link); /* Alloc a bpstat to |
4176 | explain stop. */ | |
c5aa993b | 4177 | |
f431efe5 PA |
4178 | /* Assume we stop. Should we find a watchpoint that is not |
4179 | actually triggered, or if the condition of the breakpoint | |
4180 | evaluates as false, we'll reset 'stop' to 0. */ | |
429374b8 JK |
4181 | bs->stop = 1; |
4182 | bs->print = 1; | |
d983da9c | 4183 | |
f431efe5 PA |
4184 | /* If this is a scope breakpoint, mark the associated |
4185 | watchpoint as triggered so that we will handle the | |
4186 | out-of-scope event. We'll get to the watchpoint next | |
4187 | iteration. */ | |
4188 | if (b->type == bp_watchpoint_scope) | |
4189 | b->related_breakpoint->watchpoint_triggered = watch_triggered_yes; | |
4190 | } | |
4191 | } | |
4192 | ||
4193 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, loc); ++ix) | |
4194 | { | |
4195 | if (breakpoint_address_match (loc->pspace->aspace, loc->address, | |
4196 | aspace, bp_addr)) | |
4197 | { | |
5760d0ab | 4198 | bs = bpstat_alloc (loc, &bs_link); |
f431efe5 PA |
4199 | /* For hits of moribund locations, we should just proceed. */ |
4200 | bs->stop = 0; | |
4201 | bs->print = 0; | |
4202 | bs->print_it = print_it_noop; | |
4203 | } | |
4204 | } | |
4205 | ||
f431efe5 PA |
4206 | /* Now go through the locations that caused the target to stop, and |
4207 | check whether we're interested in reporting this stop to higher | |
4208 | layers, or whether we should resume the target transparently. */ | |
4209 | ||
4210 | removed_any = 0; | |
4211 | ||
5760d0ab | 4212 | for (bs = bs_head; bs != NULL; bs = bs->next) |
f431efe5 PA |
4213 | { |
4214 | if (!bs->stop) | |
4215 | continue; | |
4216 | ||
4217 | bpstat_check_watchpoint (bs); | |
4218 | if (!bs->stop) | |
4219 | continue; | |
4220 | ||
4221 | b = bs->breakpoint_at; | |
18a18393 | 4222 | |
429374b8 | 4223 | if (b->type == bp_thread_event || b->type == bp_overlay_event |
aa7d318d | 4224 | || b->type == bp_longjmp_master |
186c406b TT |
4225 | || b->type == bp_std_terminate_master |
4226 | || b->type == bp_exception_master) | |
429374b8 JK |
4227 | /* We do not stop for these. */ |
4228 | bs->stop = 0; | |
4229 | else | |
4230 | bpstat_check_breakpoint_conditions (bs, ptid); | |
f431efe5 | 4231 | |
429374b8 JK |
4232 | if (bs->stop) |
4233 | { | |
4234 | ++(b->hit_count); | |
c906108c | 4235 | |
4a64f543 | 4236 | /* We will stop here. */ |
429374b8 JK |
4237 | if (b->disposition == disp_disable) |
4238 | { | |
4239 | if (b->enable_state != bp_permanent) | |
4240 | b->enable_state = bp_disabled; | |
f431efe5 | 4241 | removed_any = 1; |
429374b8 JK |
4242 | } |
4243 | if (b->silent) | |
4244 | bs->print = 0; | |
4245 | bs->commands = b->commands; | |
9add0f1b TT |
4246 | incref_counted_command_line (bs->commands); |
4247 | bs->commands_left = bs->commands ? bs->commands->commands : NULL; | |
4248 | if (bs->commands_left | |
4249 | && (strcmp ("silent", bs->commands_left->line) == 0 | |
4250 | || (xdb_commands | |
4251 | && strcmp ("Q", | |
4252 | bs->commands_left->line) == 0))) | |
429374b8 | 4253 | { |
9add0f1b | 4254 | bs->commands_left = bs->commands_left->next; |
429374b8 JK |
4255 | bs->print = 0; |
4256 | } | |
429374b8 JK |
4257 | } |
4258 | ||
4259 | /* Print nothing for this entry if we dont stop or dont print. */ | |
4260 | if (bs->stop == 0 || bs->print == 0) | |
4261 | bs->print_it = print_it_noop; | |
429374b8 | 4262 | } |
876fa593 | 4263 | |
d983da9c DJ |
4264 | /* If we aren't stopping, the value of some hardware watchpoint may |
4265 | not have changed, but the intermediate memory locations we are | |
4266 | watching may have. Don't bother if we're stopping; this will get | |
4267 | done later. */ | |
d832cb68 | 4268 | need_remove_insert = 0; |
5760d0ab JK |
4269 | if (! bpstat_causes_stop (bs_head)) |
4270 | for (bs = bs_head; bs != NULL; bs = bs->next) | |
d983da9c | 4271 | if (!bs->stop |
f431efe5 PA |
4272 | && bs->breakpoint_at |
4273 | && is_hardware_watchpoint (bs->breakpoint_at)) | |
d983da9c | 4274 | { |
4a64f543 | 4275 | update_watchpoint (bs->breakpoint_at, 0 /* don't reparse. */); |
d832cb68 | 4276 | need_remove_insert = 1; |
d983da9c DJ |
4277 | } |
4278 | ||
d832cb68 | 4279 | if (need_remove_insert) |
2d134ed3 | 4280 | update_global_location_list (1); |
f431efe5 PA |
4281 | else if (removed_any) |
4282 | update_global_location_list (0); | |
d832cb68 | 4283 | |
5760d0ab | 4284 | return bs_head; |
c906108c | 4285 | } |
628fe4e4 JK |
4286 | |
4287 | static void | |
4288 | handle_jit_event (void) | |
4289 | { | |
4290 | struct frame_info *frame; | |
4291 | struct gdbarch *gdbarch; | |
4292 | ||
4293 | /* Switch terminal for any messages produced by | |
4294 | breakpoint_re_set. */ | |
4295 | target_terminal_ours_for_output (); | |
4296 | ||
4297 | frame = get_current_frame (); | |
4298 | gdbarch = get_frame_arch (frame); | |
4299 | ||
4300 | jit_event_handler (gdbarch); | |
4301 | ||
4302 | target_terminal_inferior (); | |
4303 | } | |
4304 | ||
4305 | /* Prepare WHAT final decision for infrun. */ | |
4306 | ||
4307 | /* Decide what infrun needs to do with this bpstat. */ | |
4308 | ||
c906108c | 4309 | struct bpstat_what |
fba45db2 | 4310 | bpstat_what (bpstat bs) |
c906108c | 4311 | { |
c906108c | 4312 | struct bpstat_what retval; |
628fe4e4 JK |
4313 | /* We need to defer calling `solib_add', as adding new symbols |
4314 | resets breakpoints, which in turn deletes breakpoint locations, | |
4315 | and hence may clear unprocessed entries in the BS chain. */ | |
4316 | int shlib_event = 0; | |
4317 | int jit_event = 0; | |
c906108c | 4318 | |
628fe4e4 | 4319 | retval.main_action = BPSTAT_WHAT_KEEP_CHECKING; |
aa7d318d | 4320 | retval.call_dummy = STOP_NONE; |
186c406b | 4321 | retval.is_longjmp = 0; |
628fe4e4 | 4322 | |
c906108c SS |
4323 | for (; bs != NULL; bs = bs->next) |
4324 | { | |
628fe4e4 JK |
4325 | /* Extract this BS's action. After processing each BS, we check |
4326 | if its action overrides all we've seem so far. */ | |
4327 | enum bpstat_what_main_action this_action = BPSTAT_WHAT_KEEP_CHECKING; | |
4328 | enum bptype bptype; | |
4329 | ||
c906108c | 4330 | if (bs->breakpoint_at == NULL) |
628fe4e4 JK |
4331 | { |
4332 | /* I suspect this can happen if it was a momentary | |
4333 | breakpoint which has since been deleted. */ | |
4334 | bptype = bp_none; | |
4335 | } | |
f431efe5 | 4336 | else if (bs->breakpoint_at == NULL) |
628fe4e4 | 4337 | bptype = bp_none; |
20874c92 | 4338 | else |
f431efe5 | 4339 | bptype = bs->breakpoint_at->type; |
628fe4e4 JK |
4340 | |
4341 | switch (bptype) | |
c906108c SS |
4342 | { |
4343 | case bp_none: | |
628fe4e4 | 4344 | break; |
c906108c SS |
4345 | case bp_breakpoint: |
4346 | case bp_hardware_breakpoint: | |
4347 | case bp_until: | |
4348 | case bp_finish: | |
4349 | if (bs->stop) | |
4350 | { | |
4351 | if (bs->print) | |
628fe4e4 | 4352 | this_action = BPSTAT_WHAT_STOP_NOISY; |
c906108c | 4353 | else |
628fe4e4 | 4354 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c906108c SS |
4355 | } |
4356 | else | |
628fe4e4 | 4357 | this_action = BPSTAT_WHAT_SINGLE; |
c906108c SS |
4358 | break; |
4359 | case bp_watchpoint: | |
4360 | case bp_hardware_watchpoint: | |
4361 | case bp_read_watchpoint: | |
4362 | case bp_access_watchpoint: | |
4363 | if (bs->stop) | |
4364 | { | |
4365 | if (bs->print) | |
628fe4e4 | 4366 | this_action = BPSTAT_WHAT_STOP_NOISY; |
c906108c | 4367 | else |
628fe4e4 | 4368 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c906108c SS |
4369 | } |
4370 | else | |
628fe4e4 JK |
4371 | { |
4372 | /* There was a watchpoint, but we're not stopping. | |
4373 | This requires no further action. */ | |
4374 | } | |
c906108c SS |
4375 | break; |
4376 | case bp_longjmp: | |
186c406b | 4377 | case bp_exception: |
628fe4e4 | 4378 | this_action = BPSTAT_WHAT_SET_LONGJMP_RESUME; |
186c406b | 4379 | retval.is_longjmp = bptype == bp_longjmp; |
c906108c SS |
4380 | break; |
4381 | case bp_longjmp_resume: | |
186c406b | 4382 | case bp_exception_resume: |
628fe4e4 | 4383 | this_action = BPSTAT_WHAT_CLEAR_LONGJMP_RESUME; |
186c406b | 4384 | retval.is_longjmp = bptype == bp_longjmp_resume; |
c906108c SS |
4385 | break; |
4386 | case bp_step_resume: | |
4387 | if (bs->stop) | |
628fe4e4 JK |
4388 | this_action = BPSTAT_WHAT_STEP_RESUME; |
4389 | else | |
c906108c | 4390 | { |
628fe4e4 JK |
4391 | /* It is for the wrong frame. */ |
4392 | this_action = BPSTAT_WHAT_SINGLE; | |
c906108c | 4393 | } |
c906108c | 4394 | break; |
c906108c | 4395 | case bp_watchpoint_scope: |
c4093a6a | 4396 | case bp_thread_event: |
1900040c | 4397 | case bp_overlay_event: |
0fd8e87f | 4398 | case bp_longjmp_master: |
aa7d318d | 4399 | case bp_std_terminate_master: |
186c406b | 4400 | case bp_exception_master: |
628fe4e4 | 4401 | this_action = BPSTAT_WHAT_SINGLE; |
c4093a6a | 4402 | break; |
ce78b96d | 4403 | case bp_catchpoint: |
c5aa993b JM |
4404 | if (bs->stop) |
4405 | { | |
4406 | if (bs->print) | |
628fe4e4 | 4407 | this_action = BPSTAT_WHAT_STOP_NOISY; |
c5aa993b | 4408 | else |
628fe4e4 | 4409 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c5aa993b JM |
4410 | } |
4411 | else | |
628fe4e4 JK |
4412 | { |
4413 | /* There was a catchpoint, but we're not stopping. | |
4414 | This requires no further action. */ | |
4415 | } | |
4416 | break; | |
4417 | case bp_shlib_event: | |
4418 | shlib_event = 1; | |
4419 | ||
4420 | /* If requested, stop when the dynamic linker notifies GDB | |
4421 | of events. This allows the user to get control and place | |
4422 | breakpoints in initializer routines for dynamically | |
4423 | loaded objects (among other things). */ | |
4424 | if (stop_on_solib_events) | |
4425 | this_action = BPSTAT_WHAT_STOP_NOISY; | |
4426 | else | |
4427 | this_action = BPSTAT_WHAT_SINGLE; | |
4428 | break; | |
4429 | case bp_jit_event: | |
4430 | jit_event = 1; | |
4431 | this_action = BPSTAT_WHAT_SINGLE; | |
c5aa993b | 4432 | break; |
c906108c | 4433 | case bp_call_dummy: |
53a5351d JM |
4434 | /* Make sure the action is stop (silent or noisy), |
4435 | so infrun.c pops the dummy frame. */ | |
aa7d318d | 4436 | retval.call_dummy = STOP_STACK_DUMMY; |
628fe4e4 | 4437 | this_action = BPSTAT_WHAT_STOP_SILENT; |
aa7d318d TT |
4438 | break; |
4439 | case bp_std_terminate: | |
4440 | /* Make sure the action is stop (silent or noisy), | |
4441 | so infrun.c pops the dummy frame. */ | |
aa7d318d | 4442 | retval.call_dummy = STOP_STD_TERMINATE; |
628fe4e4 | 4443 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c906108c | 4444 | break; |
1042e4c0 | 4445 | case bp_tracepoint: |
7a697b8d | 4446 | case bp_fast_tracepoint: |
0fb4aa4b | 4447 | case bp_static_tracepoint: |
1042e4c0 SS |
4448 | /* Tracepoint hits should not be reported back to GDB, and |
4449 | if one got through somehow, it should have been filtered | |
4450 | out already. */ | |
4451 | internal_error (__FILE__, __LINE__, | |
7a697b8d | 4452 | _("bpstat_what: tracepoint encountered")); |
628fe4e4 JK |
4453 | default: |
4454 | internal_error (__FILE__, __LINE__, | |
4455 | _("bpstat_what: unhandled bptype %d"), (int) bptype); | |
c906108c | 4456 | } |
628fe4e4 JK |
4457 | |
4458 | retval.main_action = max (retval.main_action, this_action); | |
c906108c | 4459 | } |
628fe4e4 JK |
4460 | |
4461 | if (shlib_event) | |
4462 | { | |
4463 | if (debug_infrun) | |
4464 | fprintf_unfiltered (gdb_stdlog, "bpstat_what: bp_shlib_event\n"); | |
4465 | ||
4466 | /* Check for any newly added shared libraries if we're supposed | |
4467 | to be adding them automatically. */ | |
4468 | ||
4469 | /* Switch terminal for any messages produced by | |
4470 | breakpoint_re_set. */ | |
4471 | target_terminal_ours_for_output (); | |
4472 | ||
4473 | #ifdef SOLIB_ADD | |
4474 | SOLIB_ADD (NULL, 0, ¤t_target, auto_solib_add); | |
4475 | #else | |
4476 | solib_add (NULL, 0, ¤t_target, auto_solib_add); | |
4477 | #endif | |
4478 | ||
4479 | target_terminal_inferior (); | |
4480 | } | |
4481 | ||
4482 | if (jit_event) | |
4483 | { | |
4484 | if (debug_infrun) | |
4485 | fprintf_unfiltered (gdb_stdlog, "bpstat_what: bp_jit_event\n"); | |
4486 | ||
4487 | handle_jit_event (); | |
4488 | } | |
4489 | ||
c906108c SS |
4490 | return retval; |
4491 | } | |
4492 | ||
4493 | /* Nonzero if we should step constantly (e.g. watchpoints on machines | |
4494 | without hardware support). This isn't related to a specific bpstat, | |
4495 | just to things like whether watchpoints are set. */ | |
4496 | ||
c5aa993b | 4497 | int |
fba45db2 | 4498 | bpstat_should_step (void) |
c906108c SS |
4499 | { |
4500 | struct breakpoint *b; | |
cc59ec59 | 4501 | |
c906108c | 4502 | ALL_BREAKPOINTS (b) |
717a8278 | 4503 | if (breakpoint_enabled (b) && b->type == bp_watchpoint && b->loc != NULL) |
3172dc30 | 4504 | return 1; |
c906108c SS |
4505 | return 0; |
4506 | } | |
4507 | ||
67822962 PA |
4508 | int |
4509 | bpstat_causes_stop (bpstat bs) | |
4510 | { | |
4511 | for (; bs != NULL; bs = bs->next) | |
4512 | if (bs->stop) | |
4513 | return 1; | |
4514 | ||
4515 | return 0; | |
4516 | } | |
4517 | ||
c906108c | 4518 | \f |
c5aa993b | 4519 | |
859825b8 JK |
4520 | /* Print the LOC location out of the list of B->LOC locations. */ |
4521 | ||
0d381245 VP |
4522 | static void print_breakpoint_location (struct breakpoint *b, |
4523 | struct bp_location *loc, | |
4524 | char *wrap_indent, | |
4525 | struct ui_stream *stb) | |
4526 | { | |
6c95b8df PA |
4527 | struct cleanup *old_chain = save_current_program_space (); |
4528 | ||
859825b8 JK |
4529 | if (loc != NULL && loc->shlib_disabled) |
4530 | loc = NULL; | |
4531 | ||
6c95b8df PA |
4532 | if (loc != NULL) |
4533 | set_current_program_space (loc->pspace); | |
4534 | ||
859825b8 | 4535 | if (b->source_file && loc) |
0d381245 VP |
4536 | { |
4537 | struct symbol *sym | |
4538 | = find_pc_sect_function (loc->address, loc->section); | |
4539 | if (sym) | |
4540 | { | |
4541 | ui_out_text (uiout, "in "); | |
4542 | ui_out_field_string (uiout, "func", | |
4543 | SYMBOL_PRINT_NAME (sym)); | |
4544 | ui_out_wrap_hint (uiout, wrap_indent); | |
4545 | ui_out_text (uiout, " at "); | |
4546 | } | |
4547 | ui_out_field_string (uiout, "file", b->source_file); | |
4548 | ui_out_text (uiout, ":"); | |
4549 | ||
4550 | if (ui_out_is_mi_like_p (uiout)) | |
4551 | { | |
4552 | struct symtab_and_line sal = find_pc_line (loc->address, 0); | |
4553 | char *fullname = symtab_to_fullname (sal.symtab); | |
4554 | ||
4555 | if (fullname) | |
4556 | ui_out_field_string (uiout, "fullname", fullname); | |
4557 | } | |
4558 | ||
4559 | ui_out_field_int (uiout, "line", b->line_number); | |
4560 | } | |
859825b8 | 4561 | else if (loc) |
0d381245 | 4562 | { |
22e722e1 DJ |
4563 | print_address_symbolic (loc->gdbarch, loc->address, stb->stream, |
4564 | demangle, ""); | |
0d381245 VP |
4565 | ui_out_field_stream (uiout, "at", stb); |
4566 | } | |
859825b8 JK |
4567 | else |
4568 | ui_out_field_string (uiout, "pending", b->addr_string); | |
6c95b8df PA |
4569 | |
4570 | do_cleanups (old_chain); | |
0d381245 VP |
4571 | } |
4572 | ||
269b11a2 PA |
4573 | static const char * |
4574 | bptype_string (enum bptype type) | |
c906108c | 4575 | { |
c4093a6a JM |
4576 | struct ep_type_description |
4577 | { | |
4578 | enum bptype type; | |
4579 | char *description; | |
4580 | }; | |
4581 | static struct ep_type_description bptypes[] = | |
c906108c | 4582 | { |
c5aa993b JM |
4583 | {bp_none, "?deleted?"}, |
4584 | {bp_breakpoint, "breakpoint"}, | |
c906108c | 4585 | {bp_hardware_breakpoint, "hw breakpoint"}, |
c5aa993b JM |
4586 | {bp_until, "until"}, |
4587 | {bp_finish, "finish"}, | |
4588 | {bp_watchpoint, "watchpoint"}, | |
c906108c | 4589 | {bp_hardware_watchpoint, "hw watchpoint"}, |
c5aa993b JM |
4590 | {bp_read_watchpoint, "read watchpoint"}, |
4591 | {bp_access_watchpoint, "acc watchpoint"}, | |
4592 | {bp_longjmp, "longjmp"}, | |
4593 | {bp_longjmp_resume, "longjmp resume"}, | |
186c406b TT |
4594 | {bp_exception, "exception"}, |
4595 | {bp_exception_resume, "exception resume"}, | |
c5aa993b | 4596 | {bp_step_resume, "step resume"}, |
c5aa993b JM |
4597 | {bp_watchpoint_scope, "watchpoint scope"}, |
4598 | {bp_call_dummy, "call dummy"}, | |
aa7d318d | 4599 | {bp_std_terminate, "std::terminate"}, |
c5aa993b | 4600 | {bp_shlib_event, "shlib events"}, |
c4093a6a | 4601 | {bp_thread_event, "thread events"}, |
1900040c | 4602 | {bp_overlay_event, "overlay events"}, |
0fd8e87f | 4603 | {bp_longjmp_master, "longjmp master"}, |
aa7d318d | 4604 | {bp_std_terminate_master, "std::terminate master"}, |
186c406b | 4605 | {bp_exception_master, "exception master"}, |
ce78b96d | 4606 | {bp_catchpoint, "catchpoint"}, |
1042e4c0 | 4607 | {bp_tracepoint, "tracepoint"}, |
7a697b8d | 4608 | {bp_fast_tracepoint, "fast tracepoint"}, |
0fb4aa4b | 4609 | {bp_static_tracepoint, "static tracepoint"}, |
4efc6507 | 4610 | {bp_jit_event, "jit events"}, |
c5aa993b | 4611 | }; |
269b11a2 PA |
4612 | |
4613 | if (((int) type >= (sizeof (bptypes) / sizeof (bptypes[0]))) | |
4614 | || ((int) type != bptypes[(int) type].type)) | |
4615 | internal_error (__FILE__, __LINE__, | |
4616 | _("bptypes table does not describe type #%d."), | |
4617 | (int) type); | |
4618 | ||
4619 | return bptypes[(int) type].description; | |
4620 | } | |
4621 | ||
4622 | /* Print B to gdb_stdout. */ | |
4623 | ||
4624 | static void | |
4625 | print_one_breakpoint_location (struct breakpoint *b, | |
4626 | struct bp_location *loc, | |
4627 | int loc_number, | |
4628 | struct bp_location **last_loc, | |
4629 | int print_address_bits, | |
4630 | int allflag) | |
4631 | { | |
4632 | struct command_line *l; | |
c2c6d25f | 4633 | static char bpenables[] = "nynny"; |
c906108c | 4634 | char wrap_indent[80]; |
8b93c638 JM |
4635 | struct ui_stream *stb = ui_out_stream_new (uiout); |
4636 | struct cleanup *old_chain = make_cleanup_ui_out_stream_delete (stb); | |
3b31d625 | 4637 | struct cleanup *bkpt_chain; |
c906108c | 4638 | |
0d381245 VP |
4639 | int header_of_multiple = 0; |
4640 | int part_of_multiple = (loc != NULL); | |
79a45b7d TT |
4641 | struct value_print_options opts; |
4642 | ||
4643 | get_user_print_options (&opts); | |
0d381245 VP |
4644 | |
4645 | gdb_assert (!loc || loc_number != 0); | |
4a64f543 MS |
4646 | /* See comment in print_one_breakpoint concerning treatment of |
4647 | breakpoints with single disabled location. */ | |
0d381245 VP |
4648 | if (loc == NULL |
4649 | && (b->loc != NULL | |
4650 | && (b->loc->next != NULL || !b->loc->enabled))) | |
4651 | header_of_multiple = 1; | |
4652 | if (loc == NULL) | |
4653 | loc = b->loc; | |
4654 | ||
c4093a6a | 4655 | annotate_record (); |
3b31d625 | 4656 | bkpt_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "bkpt"); |
c4093a6a JM |
4657 | |
4658 | /* 1 */ | |
4659 | annotate_field (0); | |
0d381245 VP |
4660 | if (part_of_multiple) |
4661 | { | |
4662 | char *formatted; | |
0c6773c1 | 4663 | formatted = xstrprintf ("%d.%d", b->number, loc_number); |
0d381245 VP |
4664 | ui_out_field_string (uiout, "number", formatted); |
4665 | xfree (formatted); | |
4666 | } | |
4667 | else | |
4668 | { | |
4669 | ui_out_field_int (uiout, "number", b->number); | |
4670 | } | |
c4093a6a JM |
4671 | |
4672 | /* 2 */ | |
4673 | annotate_field (1); | |
0d381245 VP |
4674 | if (part_of_multiple) |
4675 | ui_out_field_skip (uiout, "type"); | |
269b11a2 PA |
4676 | else |
4677 | ui_out_field_string (uiout, "type", bptype_string (b->type)); | |
c4093a6a JM |
4678 | |
4679 | /* 3 */ | |
4680 | annotate_field (2); | |
0d381245 VP |
4681 | if (part_of_multiple) |
4682 | ui_out_field_skip (uiout, "disp"); | |
4683 | else | |
2cec12e5 | 4684 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); |
0d381245 | 4685 | |
c4093a6a JM |
4686 | |
4687 | /* 4 */ | |
4688 | annotate_field (3); | |
0d381245 | 4689 | if (part_of_multiple) |
54e52265 | 4690 | ui_out_field_string (uiout, "enabled", loc->enabled ? "y" : "n"); |
0d381245 | 4691 | else |
4a64f543 MS |
4692 | ui_out_field_fmt (uiout, "enabled", "%c", |
4693 | bpenables[(int) b->enable_state]); | |
54e52265 | 4694 | ui_out_spaces (uiout, 2); |
0d381245 | 4695 | |
c4093a6a JM |
4696 | |
4697 | /* 5 and 6 */ | |
4698 | strcpy (wrap_indent, " "); | |
79a45b7d | 4699 | if (opts.addressprint) |
75ac9d7b | 4700 | { |
a6d9a66e | 4701 | if (print_address_bits <= 32) |
75ac9d7b MS |
4702 | strcat (wrap_indent, " "); |
4703 | else | |
4704 | strcat (wrap_indent, " "); | |
4705 | } | |
c906108c | 4706 | |
3086aeae | 4707 | if (b->ops != NULL && b->ops->print_one != NULL) |
0d381245 | 4708 | { |
4a64f543 MS |
4709 | /* Although the print_one can possibly print all locations, |
4710 | calling it here is not likely to get any nice result. So, | |
4711 | make sure there's just one location. */ | |
0d381245 | 4712 | gdb_assert (b->loc == NULL || b->loc->next == NULL); |
a6d9a66e | 4713 | b->ops->print_one (b, last_loc); |
0d381245 | 4714 | } |
3086aeae DJ |
4715 | else |
4716 | switch (b->type) | |
4717 | { | |
4718 | case bp_none: | |
4719 | internal_error (__FILE__, __LINE__, | |
e2e0b3e5 | 4720 | _("print_one_breakpoint: bp_none encountered\n")); |
3086aeae | 4721 | break; |
c906108c | 4722 | |
3086aeae DJ |
4723 | case bp_watchpoint: |
4724 | case bp_hardware_watchpoint: | |
4725 | case bp_read_watchpoint: | |
4726 | case bp_access_watchpoint: | |
4727 | /* Field 4, the address, is omitted (which makes the columns | |
4728 | not line up too nicely with the headers, but the effect | |
4729 | is relatively readable). */ | |
79a45b7d | 4730 | if (opts.addressprint) |
3086aeae DJ |
4731 | ui_out_field_skip (uiout, "addr"); |
4732 | annotate_field (5); | |
fa8a61dc | 4733 | ui_out_field_string (uiout, "what", b->exp_string); |
3086aeae DJ |
4734 | break; |
4735 | ||
3086aeae DJ |
4736 | case bp_breakpoint: |
4737 | case bp_hardware_breakpoint: | |
4738 | case bp_until: | |
4739 | case bp_finish: | |
4740 | case bp_longjmp: | |
4741 | case bp_longjmp_resume: | |
186c406b TT |
4742 | case bp_exception: |
4743 | case bp_exception_resume: | |
3086aeae | 4744 | case bp_step_resume: |
3086aeae DJ |
4745 | case bp_watchpoint_scope: |
4746 | case bp_call_dummy: | |
aa7d318d | 4747 | case bp_std_terminate: |
3086aeae DJ |
4748 | case bp_shlib_event: |
4749 | case bp_thread_event: | |
4750 | case bp_overlay_event: | |
0fd8e87f | 4751 | case bp_longjmp_master: |
aa7d318d | 4752 | case bp_std_terminate_master: |
186c406b | 4753 | case bp_exception_master: |
1042e4c0 | 4754 | case bp_tracepoint: |
7a697b8d | 4755 | case bp_fast_tracepoint: |
0fb4aa4b | 4756 | case bp_static_tracepoint: |
4efc6507 | 4757 | case bp_jit_event: |
79a45b7d | 4758 | if (opts.addressprint) |
3086aeae DJ |
4759 | { |
4760 | annotate_field (4); | |
54e52265 | 4761 | if (header_of_multiple) |
0d381245 | 4762 | ui_out_field_string (uiout, "addr", "<MULTIPLE>"); |
e9bbd7c5 | 4763 | else if (b->loc == NULL || loc->shlib_disabled) |
54e52265 | 4764 | ui_out_field_string (uiout, "addr", "<PENDING>"); |
0101ce28 | 4765 | else |
5af949e3 UW |
4766 | ui_out_field_core_addr (uiout, "addr", |
4767 | loc->gdbarch, loc->address); | |
3086aeae DJ |
4768 | } |
4769 | annotate_field (5); | |
0d381245 VP |
4770 | if (!header_of_multiple) |
4771 | print_breakpoint_location (b, loc, wrap_indent, stb); | |
4772 | if (b->loc) | |
a6d9a66e | 4773 | *last_loc = b->loc; |
3086aeae DJ |
4774 | break; |
4775 | } | |
c906108c | 4776 | |
6c95b8df PA |
4777 | |
4778 | /* For backward compatibility, don't display inferiors unless there | |
4779 | are several. */ | |
4780 | if (loc != NULL | |
4781 | && !header_of_multiple | |
4782 | && (allflag | |
4783 | || (!gdbarch_has_global_breakpoints (target_gdbarch) | |
4784 | && (number_of_program_spaces () > 1 | |
4785 | || number_of_inferiors () > 1) | |
4a64f543 MS |
4786 | /* LOC is for existing B, it cannot be in |
4787 | moribund_locations and thus having NULL OWNER. */ | |
6c95b8df PA |
4788 | && loc->owner->type != bp_catchpoint))) |
4789 | { | |
4790 | struct inferior *inf; | |
4791 | int first = 1; | |
4792 | ||
4793 | for (inf = inferior_list; inf != NULL; inf = inf->next) | |
4794 | { | |
4795 | if (inf->pspace == loc->pspace) | |
4796 | { | |
4797 | if (first) | |
4798 | { | |
4799 | first = 0; | |
4800 | ui_out_text (uiout, " inf "); | |
4801 | } | |
4802 | else | |
4803 | ui_out_text (uiout, ", "); | |
4804 | ui_out_text (uiout, plongest (inf->num)); | |
4805 | } | |
4806 | } | |
4807 | } | |
4808 | ||
4a306c9a | 4809 | if (!part_of_multiple) |
c4093a6a | 4810 | { |
4a306c9a JB |
4811 | if (b->thread != -1) |
4812 | { | |
4813 | /* FIXME: This seems to be redundant and lost here; see the | |
4a64f543 | 4814 | "stop only in" line a little further down. */ |
4a306c9a JB |
4815 | ui_out_text (uiout, " thread "); |
4816 | ui_out_field_int (uiout, "thread", b->thread); | |
4817 | } | |
4818 | else if (b->task != 0) | |
4819 | { | |
4820 | ui_out_text (uiout, " task "); | |
4821 | ui_out_field_int (uiout, "task", b->task); | |
4822 | } | |
c4093a6a JM |
4823 | } |
4824 | ||
8b93c638 | 4825 | ui_out_text (uiout, "\n"); |
c4093a6a | 4826 | |
0fb4aa4b PA |
4827 | if (!part_of_multiple && b->static_trace_marker_id) |
4828 | { | |
4829 | gdb_assert (b->type == bp_static_tracepoint); | |
4830 | ||
4831 | ui_out_text (uiout, "\tmarker id is "); | |
4832 | ui_out_field_string (uiout, "static-tracepoint-marker-string-id", | |
4833 | b->static_trace_marker_id); | |
4834 | ui_out_text (uiout, "\n"); | |
4835 | } | |
4836 | ||
0d381245 | 4837 | if (part_of_multiple && frame_id_p (b->frame_id)) |
c4093a6a JM |
4838 | { |
4839 | annotate_field (6); | |
8b93c638 | 4840 | ui_out_text (uiout, "\tstop only in stack frame at "); |
818dd999 AC |
4841 | /* FIXME: cagney/2002-12-01: Shouldn't be poeking around inside |
4842 | the frame ID. */ | |
5af949e3 UW |
4843 | ui_out_field_core_addr (uiout, "frame", |
4844 | b->gdbarch, b->frame_id.stack_addr); | |
8b93c638 | 4845 | ui_out_text (uiout, "\n"); |
c4093a6a JM |
4846 | } |
4847 | ||
0d381245 | 4848 | if (!part_of_multiple && b->cond_string && !ada_exception_catchpoint_p (b)) |
c4093a6a | 4849 | { |
f7f9143b JB |
4850 | /* We do not print the condition for Ada exception catchpoints |
4851 | because the condition is an internal implementation detail | |
4852 | that we do not want to expose to the user. */ | |
c4093a6a | 4853 | annotate_field (7); |
d77f58be | 4854 | if (is_tracepoint (b)) |
1042e4c0 SS |
4855 | ui_out_text (uiout, "\ttrace only if "); |
4856 | else | |
4857 | ui_out_text (uiout, "\tstop only if "); | |
0101ce28 JJ |
4858 | ui_out_field_string (uiout, "cond", b->cond_string); |
4859 | ui_out_text (uiout, "\n"); | |
4860 | } | |
4861 | ||
0d381245 | 4862 | if (!part_of_multiple && b->thread != -1) |
c4093a6a | 4863 | { |
4a64f543 | 4864 | /* FIXME should make an annotation for this. */ |
8b93c638 JM |
4865 | ui_out_text (uiout, "\tstop only in thread "); |
4866 | ui_out_field_int (uiout, "thread", b->thread); | |
4867 | ui_out_text (uiout, "\n"); | |
c4093a6a JM |
4868 | } |
4869 | ||
63c715c6 | 4870 | if (!part_of_multiple && b->hit_count) |
c4093a6a | 4871 | { |
4a64f543 | 4872 | /* FIXME should make an annotation for this. */ |
8b93c638 JM |
4873 | if (ep_is_catchpoint (b)) |
4874 | ui_out_text (uiout, "\tcatchpoint"); | |
4875 | else | |
4876 | ui_out_text (uiout, "\tbreakpoint"); | |
4877 | ui_out_text (uiout, " already hit "); | |
4878 | ui_out_field_int (uiout, "times", b->hit_count); | |
4879 | if (b->hit_count == 1) | |
4880 | ui_out_text (uiout, " time\n"); | |
4881 | else | |
4882 | ui_out_text (uiout, " times\n"); | |
c4093a6a JM |
4883 | } |
4884 | ||
4a64f543 MS |
4885 | /* Output the count also if it is zero, but only if this is mi. |
4886 | FIXME: Should have a better test for this. */ | |
9dc5e2a9 | 4887 | if (ui_out_is_mi_like_p (uiout)) |
63c715c6 | 4888 | if (!part_of_multiple && b->hit_count == 0) |
fb40c209 | 4889 | ui_out_field_int (uiout, "times", b->hit_count); |
8b93c638 | 4890 | |
0d381245 | 4891 | if (!part_of_multiple && b->ignore_count) |
c4093a6a JM |
4892 | { |
4893 | annotate_field (8); | |
8b93c638 JM |
4894 | ui_out_text (uiout, "\tignore next "); |
4895 | ui_out_field_int (uiout, "ignore", b->ignore_count); | |
4896 | ui_out_text (uiout, " hits\n"); | |
c4093a6a | 4897 | } |
059fb39f | 4898 | |
9add0f1b | 4899 | l = b->commands ? b->commands->commands : NULL; |
059fb39f | 4900 | if (!part_of_multiple && l) |
c4093a6a | 4901 | { |
3b31d625 EZ |
4902 | struct cleanup *script_chain; |
4903 | ||
c4093a6a | 4904 | annotate_field (9); |
3b31d625 | 4905 | script_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "script"); |
8b93c638 | 4906 | print_command_lines (uiout, l, 4); |
3b31d625 | 4907 | do_cleanups (script_chain); |
c4093a6a | 4908 | } |
d24317b4 | 4909 | |
1042e4c0 SS |
4910 | if (!part_of_multiple && b->pass_count) |
4911 | { | |
4912 | annotate_field (10); | |
4913 | ui_out_text (uiout, "\tpass count "); | |
4914 | ui_out_field_int (uiout, "pass", b->pass_count); | |
4915 | ui_out_text (uiout, " \n"); | |
4916 | } | |
4917 | ||
d24317b4 VP |
4918 | if (ui_out_is_mi_like_p (uiout) && !part_of_multiple) |
4919 | { | |
4920 | if (b->addr_string) | |
4921 | ui_out_field_string (uiout, "original-location", b->addr_string); | |
4922 | else if (b->exp_string) | |
4923 | ui_out_field_string (uiout, "original-location", b->exp_string); | |
4924 | } | |
4925 | ||
3b31d625 | 4926 | do_cleanups (bkpt_chain); |
8b93c638 | 4927 | do_cleanups (old_chain); |
c4093a6a | 4928 | } |
c5aa993b | 4929 | |
0d381245 VP |
4930 | static void |
4931 | print_one_breakpoint (struct breakpoint *b, | |
4a64f543 MS |
4932 | struct bp_location **last_loc, |
4933 | int print_address_bits, | |
6c95b8df | 4934 | int allflag) |
0d381245 | 4935 | { |
6c95b8df PA |
4936 | print_one_breakpoint_location (b, NULL, 0, last_loc, |
4937 | print_address_bits, allflag); | |
0d381245 VP |
4938 | |
4939 | /* If this breakpoint has custom print function, | |
4940 | it's already printed. Otherwise, print individual | |
4941 | locations, if any. */ | |
4942 | if (b->ops == NULL || b->ops->print_one == NULL) | |
4943 | { | |
4a64f543 MS |
4944 | /* If breakpoint has a single location that is disabled, we |
4945 | print it as if it had several locations, since otherwise it's | |
4946 | hard to represent "breakpoint enabled, location disabled" | |
4947 | situation. | |
4948 | ||
4949 | Note that while hardware watchpoints have several locations | |
4950 | internally, that's no a property exposed to user. */ | |
0d381245 | 4951 | if (b->loc |
a5606eee | 4952 | && !is_hardware_watchpoint (b) |
0d381245 | 4953 | && (b->loc->next || !b->loc->enabled) |
a5606eee | 4954 | && !ui_out_is_mi_like_p (uiout)) |
0d381245 VP |
4955 | { |
4956 | struct bp_location *loc; | |
4957 | int n = 1; | |
4958 | for (loc = b->loc; loc; loc = loc->next, ++n) | |
a6d9a66e | 4959 | print_one_breakpoint_location (b, loc, n, last_loc, |
6c95b8df | 4960 | print_address_bits, allflag); |
0d381245 VP |
4961 | } |
4962 | } | |
4963 | } | |
4964 | ||
a6d9a66e UW |
4965 | static int |
4966 | breakpoint_address_bits (struct breakpoint *b) | |
4967 | { | |
4968 | int print_address_bits = 0; | |
4969 | struct bp_location *loc; | |
4970 | ||
4971 | for (loc = b->loc; loc; loc = loc->next) | |
4972 | { | |
c7437ca6 PA |
4973 | int addr_bit; |
4974 | ||
4975 | /* Software watchpoints that aren't watching memory don't have | |
4976 | an address to print. */ | |
4977 | if (b->type == bp_watchpoint && loc->watchpoint_type == -1) | |
4978 | continue; | |
4979 | ||
4980 | addr_bit = gdbarch_addr_bit (loc->gdbarch); | |
a6d9a66e UW |
4981 | if (addr_bit > print_address_bits) |
4982 | print_address_bits = addr_bit; | |
4983 | } | |
4984 | ||
4985 | return print_address_bits; | |
4986 | } | |
0d381245 | 4987 | |
c4093a6a JM |
4988 | struct captured_breakpoint_query_args |
4989 | { | |
4990 | int bnum; | |
4991 | }; | |
c5aa993b | 4992 | |
c4093a6a | 4993 | static int |
2b65245e | 4994 | do_captured_breakpoint_query (struct ui_out *uiout, void *data) |
c4093a6a JM |
4995 | { |
4996 | struct captured_breakpoint_query_args *args = data; | |
52f0bd74 | 4997 | struct breakpoint *b; |
a6d9a66e | 4998 | struct bp_location *dummy_loc = NULL; |
cc59ec59 | 4999 | |
c4093a6a JM |
5000 | ALL_BREAKPOINTS (b) |
5001 | { | |
5002 | if (args->bnum == b->number) | |
c5aa993b | 5003 | { |
a6d9a66e | 5004 | int print_address_bits = breakpoint_address_bits (b); |
cc59ec59 | 5005 | |
6c95b8df | 5006 | print_one_breakpoint (b, &dummy_loc, print_address_bits, 0); |
c4093a6a | 5007 | return GDB_RC_OK; |
c5aa993b | 5008 | } |
c4093a6a JM |
5009 | } |
5010 | return GDB_RC_NONE; | |
5011 | } | |
c5aa993b | 5012 | |
c4093a6a | 5013 | enum gdb_rc |
4a64f543 MS |
5014 | gdb_breakpoint_query (struct ui_out *uiout, int bnum, |
5015 | char **error_message) | |
c4093a6a JM |
5016 | { |
5017 | struct captured_breakpoint_query_args args; | |
cc59ec59 | 5018 | |
c4093a6a JM |
5019 | args.bnum = bnum; |
5020 | /* For the moment we don't trust print_one_breakpoint() to not throw | |
4a64f543 | 5021 | an error. */ |
b0b13bb4 DJ |
5022 | if (catch_exceptions_with_msg (uiout, do_captured_breakpoint_query, &args, |
5023 | error_message, RETURN_MASK_ALL) < 0) | |
5024 | return GDB_RC_FAIL; | |
5025 | else | |
5026 | return GDB_RC_OK; | |
c4093a6a | 5027 | } |
c5aa993b | 5028 | |
7f3b0473 | 5029 | /* Return non-zero if B is user settable (breakpoints, watchpoints, |
4a64f543 | 5030 | catchpoints, et.al.). */ |
7f3b0473 AC |
5031 | |
5032 | static int | |
5033 | user_settable_breakpoint (const struct breakpoint *b) | |
5034 | { | |
5035 | return (b->type == bp_breakpoint | |
ce78b96d | 5036 | || b->type == bp_catchpoint |
7f3b0473 | 5037 | || b->type == bp_hardware_breakpoint |
d77f58be | 5038 | || is_tracepoint (b) |
cc60f2e3 | 5039 | || is_watchpoint (b)); |
7f3b0473 | 5040 | } |
4a64f543 | 5041 | |
7f3b0473 | 5042 | /* Print information on user settable breakpoint (watchpoint, etc) |
d77f58be SS |
5043 | number BNUM. If BNUM is -1 print all user-settable breakpoints. |
5044 | If ALLFLAG is non-zero, include non-user-settable breakpoints. If | |
5045 | FILTER is non-NULL, call it on each breakpoint and only include the | |
5046 | ones for which it returns non-zero. Return the total number of | |
5047 | breakpoints listed. */ | |
c906108c | 5048 | |
d77f58be | 5049 | static int |
4a64f543 MS |
5050 | breakpoint_1 (int bnum, int allflag, |
5051 | int (*filter) (const struct breakpoint *)) | |
c4093a6a | 5052 | { |
52f0bd74 | 5053 | struct breakpoint *b; |
a6d9a66e | 5054 | struct bp_location *last_loc = NULL; |
7f3b0473 | 5055 | int nr_printable_breakpoints; |
3b31d625 | 5056 | struct cleanup *bkpttbl_chain; |
79a45b7d | 5057 | struct value_print_options opts; |
a6d9a66e | 5058 | int print_address_bits = 0; |
269b11a2 PA |
5059 | int print_type_col_width = 14; |
5060 | ||
79a45b7d TT |
5061 | get_user_print_options (&opts); |
5062 | ||
4a64f543 MS |
5063 | /* Compute the number of rows in the table, as well as the size |
5064 | required for address fields. */ | |
7f3b0473 AC |
5065 | nr_printable_breakpoints = 0; |
5066 | ALL_BREAKPOINTS (b) | |
5067 | if (bnum == -1 | |
5068 | || bnum == b->number) | |
5069 | { | |
d77f58be SS |
5070 | /* If we have a filter, only list the breakpoints it accepts. */ |
5071 | if (filter && !filter (b)) | |
5072 | continue; | |
5073 | ||
84f4c1fe PM |
5074 | if (allflag || (user_settable_breakpoint (b) |
5075 | && b->number > 0)) | |
a6d9a66e | 5076 | { |
269b11a2 PA |
5077 | int addr_bit, type_len; |
5078 | ||
5079 | addr_bit = breakpoint_address_bits (b); | |
a6d9a66e UW |
5080 | if (addr_bit > print_address_bits) |
5081 | print_address_bits = addr_bit; | |
5082 | ||
269b11a2 PA |
5083 | type_len = strlen (bptype_string (b->type)); |
5084 | if (type_len > print_type_col_width) | |
5085 | print_type_col_width = type_len; | |
5086 | ||
a6d9a66e UW |
5087 | nr_printable_breakpoints++; |
5088 | } | |
7f3b0473 AC |
5089 | } |
5090 | ||
79a45b7d | 5091 | if (opts.addressprint) |
3b31d625 | 5092 | bkpttbl_chain |
3e43a32a MS |
5093 | = make_cleanup_ui_out_table_begin_end (uiout, 6, |
5094 | nr_printable_breakpoints, | |
3b31d625 | 5095 | "BreakpointTable"); |
8b93c638 | 5096 | else |
3b31d625 | 5097 | bkpttbl_chain |
3e43a32a MS |
5098 | = make_cleanup_ui_out_table_begin_end (uiout, 5, |
5099 | nr_printable_breakpoints, | |
3b31d625 | 5100 | "BreakpointTable"); |
8b93c638 | 5101 | |
7f3b0473 | 5102 | if (nr_printable_breakpoints > 0) |
d7faa9e7 AC |
5103 | annotate_breakpoints_headers (); |
5104 | if (nr_printable_breakpoints > 0) | |
5105 | annotate_field (0); | |
4a64f543 | 5106 | ui_out_table_header (uiout, 7, ui_left, "number", "Num"); /* 1 */ |
d7faa9e7 AC |
5107 | if (nr_printable_breakpoints > 0) |
5108 | annotate_field (1); | |
269b11a2 | 5109 | ui_out_table_header (uiout, print_type_col_width, ui_left, |
4a64f543 | 5110 | "type", "Type"); /* 2 */ |
d7faa9e7 AC |
5111 | if (nr_printable_breakpoints > 0) |
5112 | annotate_field (2); | |
4a64f543 | 5113 | ui_out_table_header (uiout, 4, ui_left, "disp", "Disp"); /* 3 */ |
d7faa9e7 AC |
5114 | if (nr_printable_breakpoints > 0) |
5115 | annotate_field (3); | |
54e52265 | 5116 | ui_out_table_header (uiout, 3, ui_left, "enabled", "Enb"); /* 4 */ |
79a45b7d | 5117 | if (opts.addressprint) |
7f3b0473 | 5118 | { |
d7faa9e7 AC |
5119 | if (nr_printable_breakpoints > 0) |
5120 | annotate_field (4); | |
a6d9a66e | 5121 | if (print_address_bits <= 32) |
4a64f543 MS |
5122 | ui_out_table_header (uiout, 10, ui_left, |
5123 | "addr", "Address"); /* 5 */ | |
7f3b0473 | 5124 | else |
4a64f543 MS |
5125 | ui_out_table_header (uiout, 18, ui_left, |
5126 | "addr", "Address"); /* 5 */ | |
7f3b0473 | 5127 | } |
d7faa9e7 AC |
5128 | if (nr_printable_breakpoints > 0) |
5129 | annotate_field (5); | |
5130 | ui_out_table_header (uiout, 40, ui_noalign, "what", "What"); /* 6 */ | |
5131 | ui_out_table_body (uiout); | |
5132 | if (nr_printable_breakpoints > 0) | |
5133 | annotate_breakpoints_table (); | |
7f3b0473 | 5134 | |
c4093a6a | 5135 | ALL_BREAKPOINTS (b) |
bad56014 TT |
5136 | { |
5137 | QUIT; | |
c4093a6a JM |
5138 | if (bnum == -1 |
5139 | || bnum == b->number) | |
5140 | { | |
d77f58be SS |
5141 | /* If we have a filter, only list the breakpoints it accepts. */ |
5142 | if (filter && !filter (b)) | |
5143 | continue; | |
5144 | ||
c4093a6a | 5145 | /* We only print out user settable breakpoints unless the |
4a64f543 | 5146 | allflag is set. */ |
84f4c1fe PM |
5147 | if (allflag || (user_settable_breakpoint (b) |
5148 | && b->number > 0)) | |
6c95b8df | 5149 | print_one_breakpoint (b, &last_loc, print_address_bits, allflag); |
c4093a6a | 5150 | } |
bad56014 | 5151 | } |
c4093a6a | 5152 | |
3b31d625 | 5153 | do_cleanups (bkpttbl_chain); |
698384cd | 5154 | |
7f3b0473 | 5155 | if (nr_printable_breakpoints == 0) |
c906108c | 5156 | { |
4a64f543 MS |
5157 | /* If there's a filter, let the caller decide how to report |
5158 | empty list. */ | |
d77f58be SS |
5159 | if (!filter) |
5160 | { | |
5161 | if (bnum == -1) | |
5162 | ui_out_message (uiout, 0, "No breakpoints or watchpoints.\n"); | |
5163 | else | |
4a64f543 MS |
5164 | ui_out_message (uiout, 0, |
5165 | "No breakpoint or watchpoint number %d.\n", | |
d77f58be SS |
5166 | bnum); |
5167 | } | |
c906108c SS |
5168 | } |
5169 | else | |
c4093a6a | 5170 | { |
a6d9a66e UW |
5171 | if (last_loc && !server_command) |
5172 | set_next_address (last_loc->gdbarch, last_loc->address); | |
c4093a6a | 5173 | } |
c906108c | 5174 | |
4a64f543 | 5175 | /* FIXME? Should this be moved up so that it is only called when |
c4093a6a | 5176 | there have been breakpoints? */ |
c906108c | 5177 | annotate_breakpoints_table_end (); |
d77f58be SS |
5178 | |
5179 | return nr_printable_breakpoints; | |
c906108c SS |
5180 | } |
5181 | ||
ad443146 SS |
5182 | /* Display the value of default-collect in a way that is generally |
5183 | compatible with the breakpoint list. */ | |
5184 | ||
5185 | static void | |
5186 | default_collect_info (void) | |
5187 | { | |
5188 | /* If it has no value (which is frequently the case), say nothing; a | |
5189 | message like "No default-collect." gets in user's face when it's | |
5190 | not wanted. */ | |
5191 | if (!*default_collect) | |
5192 | return; | |
5193 | ||
5194 | /* The following phrase lines up nicely with per-tracepoint collect | |
5195 | actions. */ | |
5196 | ui_out_text (uiout, "default collect "); | |
5197 | ui_out_field_string (uiout, "default-collect", default_collect); | |
5198 | ui_out_text (uiout, " \n"); | |
5199 | } | |
5200 | ||
c906108c | 5201 | static void |
fba45db2 | 5202 | breakpoints_info (char *bnum_exp, int from_tty) |
c906108c SS |
5203 | { |
5204 | int bnum = -1; | |
5205 | ||
5206 | if (bnum_exp) | |
bb518678 | 5207 | bnum = parse_and_eval_long (bnum_exp); |
c906108c | 5208 | |
d77f58be | 5209 | breakpoint_1 (bnum, 0, NULL); |
ad443146 SS |
5210 | |
5211 | default_collect_info (); | |
d77f58be SS |
5212 | } |
5213 | ||
5214 | static void | |
5215 | watchpoints_info (char *wpnum_exp, int from_tty) | |
5216 | { | |
5217 | int wpnum = -1, num_printed; | |
5218 | ||
5219 | if (wpnum_exp) | |
5220 | wpnum = parse_and_eval_long (wpnum_exp); | |
5221 | ||
5222 | num_printed = breakpoint_1 (wpnum, 0, is_watchpoint); | |
5223 | ||
5224 | if (num_printed == 0) | |
5225 | { | |
5226 | if (wpnum == -1) | |
5227 | ui_out_message (uiout, 0, "No watchpoints.\n"); | |
5228 | else | |
5229 | ui_out_message (uiout, 0, "No watchpoint number %d.\n", wpnum); | |
5230 | } | |
c906108c SS |
5231 | } |
5232 | ||
7a292a7a | 5233 | static void |
fba45db2 | 5234 | maintenance_info_breakpoints (char *bnum_exp, int from_tty) |
c906108c SS |
5235 | { |
5236 | int bnum = -1; | |
5237 | ||
5238 | if (bnum_exp) | |
bb518678 | 5239 | bnum = parse_and_eval_long (bnum_exp); |
c906108c | 5240 | |
d77f58be | 5241 | breakpoint_1 (bnum, 1, NULL); |
ad443146 SS |
5242 | |
5243 | default_collect_info (); | |
c906108c SS |
5244 | } |
5245 | ||
0d381245 | 5246 | static int |
714835d5 | 5247 | breakpoint_has_pc (struct breakpoint *b, |
6c95b8df | 5248 | struct program_space *pspace, |
714835d5 | 5249 | CORE_ADDR pc, struct obj_section *section) |
0d381245 VP |
5250 | { |
5251 | struct bp_location *bl = b->loc; | |
cc59ec59 | 5252 | |
0d381245 VP |
5253 | for (; bl; bl = bl->next) |
5254 | { | |
6c95b8df PA |
5255 | if (bl->pspace == pspace |
5256 | && bl->address == pc | |
0d381245 VP |
5257 | && (!overlay_debugging || bl->section == section)) |
5258 | return 1; | |
5259 | } | |
5260 | return 0; | |
5261 | } | |
5262 | ||
6c95b8df PA |
5263 | /* Print a message describing any breakpoints set at PC. This |
5264 | concerns with logical breakpoints, so we match program spaces, not | |
5265 | address spaces. */ | |
c906108c SS |
5266 | |
5267 | static void | |
6c95b8df PA |
5268 | describe_other_breakpoints (struct gdbarch *gdbarch, |
5269 | struct program_space *pspace, CORE_ADDR pc, | |
5af949e3 | 5270 | struct obj_section *section, int thread) |
c906108c | 5271 | { |
52f0bd74 AC |
5272 | int others = 0; |
5273 | struct breakpoint *b; | |
c906108c SS |
5274 | |
5275 | ALL_BREAKPOINTS (b) | |
6c95b8df | 5276 | others += breakpoint_has_pc (b, pspace, pc, section); |
c906108c SS |
5277 | if (others > 0) |
5278 | { | |
a3f17187 AC |
5279 | if (others == 1) |
5280 | printf_filtered (_("Note: breakpoint ")); | |
5281 | else /* if (others == ???) */ | |
5282 | printf_filtered (_("Note: breakpoints ")); | |
c906108c | 5283 | ALL_BREAKPOINTS (b) |
6c95b8df | 5284 | if (breakpoint_has_pc (b, pspace, pc, section)) |
0d381245 VP |
5285 | { |
5286 | others--; | |
5287 | printf_filtered ("%d", b->number); | |
5288 | if (b->thread == -1 && thread != -1) | |
5289 | printf_filtered (" (all threads)"); | |
5290 | else if (b->thread != -1) | |
5291 | printf_filtered (" (thread %d)", b->thread); | |
5292 | printf_filtered ("%s%s ", | |
059fb39f | 5293 | ((b->enable_state == bp_disabled |
8bea4e01 UW |
5294 | || b->enable_state == bp_call_disabled |
5295 | || b->enable_state == bp_startup_disabled) | |
0d381245 VP |
5296 | ? " (disabled)" |
5297 | : b->enable_state == bp_permanent | |
5298 | ? " (permanent)" | |
5299 | : ""), | |
5300 | (others > 1) ? "," | |
5301 | : ((others == 1) ? " and" : "")); | |
5302 | } | |
a3f17187 | 5303 | printf_filtered (_("also set at pc ")); |
5af949e3 | 5304 | fputs_filtered (paddress (gdbarch, pc), gdb_stdout); |
c906108c SS |
5305 | printf_filtered (".\n"); |
5306 | } | |
5307 | } | |
5308 | \f | |
5309 | /* Set the default place to put a breakpoint | |
5310 | for the `break' command with no arguments. */ | |
5311 | ||
5312 | void | |
6c95b8df PA |
5313 | set_default_breakpoint (int valid, struct program_space *pspace, |
5314 | CORE_ADDR addr, struct symtab *symtab, | |
fba45db2 | 5315 | int line) |
c906108c SS |
5316 | { |
5317 | default_breakpoint_valid = valid; | |
6c95b8df | 5318 | default_breakpoint_pspace = pspace; |
c906108c SS |
5319 | default_breakpoint_address = addr; |
5320 | default_breakpoint_symtab = symtab; | |
5321 | default_breakpoint_line = line; | |
5322 | } | |
5323 | ||
e4f237da KB |
5324 | /* Return true iff it is meaningful to use the address member of |
5325 | BPT. For some breakpoint types, the address member is irrelevant | |
5326 | and it makes no sense to attempt to compare it to other addresses | |
5327 | (or use it for any other purpose either). | |
5328 | ||
4a64f543 MS |
5329 | More specifically, each of the following breakpoint types will |
5330 | always have a zero valued address and we don't want to mark | |
5331 | breakpoints of any of these types to be a duplicate of an actual | |
5332 | breakpoint at address zero: | |
e4f237da KB |
5333 | |
5334 | bp_watchpoint | |
2d134ed3 PA |
5335 | bp_catchpoint |
5336 | ||
5337 | */ | |
e4f237da KB |
5338 | |
5339 | static int | |
5340 | breakpoint_address_is_meaningful (struct breakpoint *bpt) | |
5341 | { | |
5342 | enum bptype type = bpt->type; | |
5343 | ||
2d134ed3 PA |
5344 | return (type != bp_watchpoint && type != bp_catchpoint); |
5345 | } | |
5346 | ||
5347 | /* Assuming LOC1 and LOC2's owners are hardware watchpoints, returns | |
5348 | true if LOC1 and LOC2 represent the same watchpoint location. */ | |
5349 | ||
5350 | static int | |
4a64f543 MS |
5351 | watchpoint_locations_match (struct bp_location *loc1, |
5352 | struct bp_location *loc2) | |
2d134ed3 | 5353 | { |
2bdf28a0 JK |
5354 | /* Both of them must not be in moribund_locations. */ |
5355 | gdb_assert (loc1->owner != NULL); | |
5356 | gdb_assert (loc2->owner != NULL); | |
5357 | ||
4a64f543 MS |
5358 | /* If the target can evaluate the condition expression in hardware, |
5359 | then we we need to insert both watchpoints even if they are at | |
5360 | the same place. Otherwise the watchpoint will only trigger when | |
5361 | the condition of whichever watchpoint was inserted evaluates to | |
5362 | true, not giving a chance for GDB to check the condition of the | |
5363 | other watchpoint. */ | |
0cf6dd15 | 5364 | if ((loc1->owner->cond_exp |
4a64f543 MS |
5365 | && target_can_accel_watchpoint_condition (loc1->address, |
5366 | loc1->length, | |
0cf6dd15 TJB |
5367 | loc1->watchpoint_type, |
5368 | loc1->owner->cond_exp)) | |
5369 | || (loc2->owner->cond_exp | |
4a64f543 MS |
5370 | && target_can_accel_watchpoint_condition (loc2->address, |
5371 | loc2->length, | |
0cf6dd15 TJB |
5372 | loc2->watchpoint_type, |
5373 | loc2->owner->cond_exp))) | |
5374 | return 0; | |
5375 | ||
85d721b8 PA |
5376 | /* Note that this checks the owner's type, not the location's. In |
5377 | case the target does not support read watchpoints, but does | |
5378 | support access watchpoints, we'll have bp_read_watchpoint | |
5379 | watchpoints with hw_access locations. Those should be considered | |
5380 | duplicates of hw_read locations. The hw_read locations will | |
5381 | become hw_access locations later. */ | |
2d134ed3 PA |
5382 | return (loc1->owner->type == loc2->owner->type |
5383 | && loc1->pspace->aspace == loc2->pspace->aspace | |
5384 | && loc1->address == loc2->address | |
5385 | && loc1->length == loc2->length); | |
e4f237da KB |
5386 | } |
5387 | ||
6c95b8df PA |
5388 | /* Returns true if {ASPACE1,ADDR1} and {ASPACE2,ADDR2} represent the |
5389 | same breakpoint location. In most targets, this can only be true | |
5390 | if ASPACE1 matches ASPACE2. On targets that have global | |
5391 | breakpoints, the address space doesn't really matter. */ | |
5392 | ||
5393 | static int | |
5394 | breakpoint_address_match (struct address_space *aspace1, CORE_ADDR addr1, | |
5395 | struct address_space *aspace2, CORE_ADDR addr2) | |
5396 | { | |
5397 | return ((gdbarch_has_global_breakpoints (target_gdbarch) | |
5398 | || aspace1 == aspace2) | |
5399 | && addr1 == addr2); | |
5400 | } | |
5401 | ||
2d134ed3 PA |
5402 | /* Assuming LOC1 and LOC2's types' have meaningful target addresses |
5403 | (breakpoint_address_is_meaningful), returns true if LOC1 and LOC2 | |
5404 | represent the same location. */ | |
5405 | ||
5406 | static int | |
4a64f543 MS |
5407 | breakpoint_locations_match (struct bp_location *loc1, |
5408 | struct bp_location *loc2) | |
2d134ed3 | 5409 | { |
2bdf28a0 JK |
5410 | int hw_point1, hw_point2; |
5411 | ||
5412 | /* Both of them must not be in moribund_locations. */ | |
5413 | gdb_assert (loc1->owner != NULL); | |
5414 | gdb_assert (loc2->owner != NULL); | |
5415 | ||
5416 | hw_point1 = is_hardware_watchpoint (loc1->owner); | |
5417 | hw_point2 = is_hardware_watchpoint (loc2->owner); | |
2d134ed3 PA |
5418 | |
5419 | if (hw_point1 != hw_point2) | |
5420 | return 0; | |
5421 | else if (hw_point1) | |
5422 | return watchpoint_locations_match (loc1, loc2); | |
5423 | else | |
5424 | return breakpoint_address_match (loc1->pspace->aspace, loc1->address, | |
5425 | loc2->pspace->aspace, loc2->address); | |
5426 | } | |
5427 | ||
76897487 KB |
5428 | static void |
5429 | breakpoint_adjustment_warning (CORE_ADDR from_addr, CORE_ADDR to_addr, | |
5430 | int bnum, int have_bnum) | |
5431 | { | |
5432 | char astr1[40]; | |
5433 | char astr2[40]; | |
5434 | ||
bb599908 PH |
5435 | strcpy (astr1, hex_string_custom ((unsigned long) from_addr, 8)); |
5436 | strcpy (astr2, hex_string_custom ((unsigned long) to_addr, 8)); | |
76897487 | 5437 | if (have_bnum) |
8a3fe4f8 | 5438 | warning (_("Breakpoint %d address previously adjusted from %s to %s."), |
76897487 KB |
5439 | bnum, astr1, astr2); |
5440 | else | |
8a3fe4f8 | 5441 | warning (_("Breakpoint address adjusted from %s to %s."), astr1, astr2); |
76897487 KB |
5442 | } |
5443 | ||
4a64f543 MS |
5444 | /* Adjust a breakpoint's address to account for architectural |
5445 | constraints on breakpoint placement. Return the adjusted address. | |
5446 | Note: Very few targets require this kind of adjustment. For most | |
5447 | targets, this function is simply the identity function. */ | |
76897487 KB |
5448 | |
5449 | static CORE_ADDR | |
a6d9a66e UW |
5450 | adjust_breakpoint_address (struct gdbarch *gdbarch, |
5451 | CORE_ADDR bpaddr, enum bptype bptype) | |
76897487 | 5452 | { |
a6d9a66e | 5453 | if (!gdbarch_adjust_breakpoint_address_p (gdbarch)) |
76897487 KB |
5454 | { |
5455 | /* Very few targets need any kind of breakpoint adjustment. */ | |
5456 | return bpaddr; | |
5457 | } | |
88f7da05 KB |
5458 | else if (bptype == bp_watchpoint |
5459 | || bptype == bp_hardware_watchpoint | |
5460 | || bptype == bp_read_watchpoint | |
5461 | || bptype == bp_access_watchpoint | |
fe798b75 | 5462 | || bptype == bp_catchpoint) |
88f7da05 KB |
5463 | { |
5464 | /* Watchpoints and the various bp_catch_* eventpoints should not | |
5465 | have their addresses modified. */ | |
5466 | return bpaddr; | |
5467 | } | |
76897487 KB |
5468 | else |
5469 | { | |
5470 | CORE_ADDR adjusted_bpaddr; | |
5471 | ||
5472 | /* Some targets have architectural constraints on the placement | |
5473 | of breakpoint instructions. Obtain the adjusted address. */ | |
a6d9a66e | 5474 | adjusted_bpaddr = gdbarch_adjust_breakpoint_address (gdbarch, bpaddr); |
76897487 KB |
5475 | |
5476 | /* An adjusted breakpoint address can significantly alter | |
5477 | a user's expectations. Print a warning if an adjustment | |
5478 | is required. */ | |
5479 | if (adjusted_bpaddr != bpaddr) | |
5480 | breakpoint_adjustment_warning (bpaddr, adjusted_bpaddr, 0, 0); | |
5481 | ||
5482 | return adjusted_bpaddr; | |
5483 | } | |
5484 | } | |
5485 | ||
7cc221ef DJ |
5486 | /* Allocate a struct bp_location. */ |
5487 | ||
26bb91f3 | 5488 | static struct bp_location * |
39d61571 | 5489 | allocate_bp_location (struct breakpoint *bpt) |
7cc221ef | 5490 | { |
afe38095 | 5491 | struct bp_location *loc; |
7cc221ef DJ |
5492 | |
5493 | loc = xmalloc (sizeof (struct bp_location)); | |
5494 | memset (loc, 0, sizeof (*loc)); | |
5495 | ||
e049a4b5 | 5496 | loc->owner = bpt; |
511a6cd4 | 5497 | loc->cond = NULL; |
0d381245 VP |
5498 | loc->shlib_disabled = 0; |
5499 | loc->enabled = 1; | |
e049a4b5 | 5500 | |
39d61571 | 5501 | switch (bpt->type) |
e049a4b5 DJ |
5502 | { |
5503 | case bp_breakpoint: | |
5504 | case bp_until: | |
5505 | case bp_finish: | |
5506 | case bp_longjmp: | |
5507 | case bp_longjmp_resume: | |
186c406b TT |
5508 | case bp_exception: |
5509 | case bp_exception_resume: | |
e049a4b5 | 5510 | case bp_step_resume: |
e049a4b5 DJ |
5511 | case bp_watchpoint_scope: |
5512 | case bp_call_dummy: | |
aa7d318d | 5513 | case bp_std_terminate: |
e049a4b5 DJ |
5514 | case bp_shlib_event: |
5515 | case bp_thread_event: | |
5516 | case bp_overlay_event: | |
4efc6507 | 5517 | case bp_jit_event: |
0fd8e87f | 5518 | case bp_longjmp_master: |
aa7d318d | 5519 | case bp_std_terminate_master: |
186c406b | 5520 | case bp_exception_master: |
e049a4b5 DJ |
5521 | loc->loc_type = bp_loc_software_breakpoint; |
5522 | break; | |
5523 | case bp_hardware_breakpoint: | |
5524 | loc->loc_type = bp_loc_hardware_breakpoint; | |
5525 | break; | |
5526 | case bp_hardware_watchpoint: | |
5527 | case bp_read_watchpoint: | |
5528 | case bp_access_watchpoint: | |
5529 | loc->loc_type = bp_loc_hardware_watchpoint; | |
5530 | break; | |
5531 | case bp_watchpoint: | |
ce78b96d | 5532 | case bp_catchpoint: |
15c3d785 PA |
5533 | case bp_tracepoint: |
5534 | case bp_fast_tracepoint: | |
0fb4aa4b | 5535 | case bp_static_tracepoint: |
e049a4b5 DJ |
5536 | loc->loc_type = bp_loc_other; |
5537 | break; | |
5538 | default: | |
e2e0b3e5 | 5539 | internal_error (__FILE__, __LINE__, _("unknown breakpoint type")); |
e049a4b5 DJ |
5540 | } |
5541 | ||
f431efe5 | 5542 | loc->refc = 1; |
7cc221ef DJ |
5543 | return loc; |
5544 | } | |
5545 | ||
f431efe5 PA |
5546 | static void |
5547 | free_bp_location (struct bp_location *loc) | |
fe3f5fa8 VP |
5548 | { |
5549 | if (loc->cond) | |
5550 | xfree (loc->cond); | |
74960c60 VP |
5551 | |
5552 | if (loc->function_name) | |
5553 | xfree (loc->function_name); | |
f431efe5 | 5554 | |
fe3f5fa8 VP |
5555 | xfree (loc); |
5556 | } | |
5557 | ||
f431efe5 PA |
5558 | /* Increment reference count. */ |
5559 | ||
5560 | static void | |
5561 | incref_bp_location (struct bp_location *bl) | |
5562 | { | |
5563 | ++bl->refc; | |
5564 | } | |
5565 | ||
5566 | /* Decrement reference count. If the reference count reaches 0, | |
5567 | destroy the bp_location. Sets *BLP to NULL. */ | |
5568 | ||
5569 | static void | |
5570 | decref_bp_location (struct bp_location **blp) | |
5571 | { | |
0807b50c PA |
5572 | gdb_assert ((*blp)->refc > 0); |
5573 | ||
f431efe5 PA |
5574 | if (--(*blp)->refc == 0) |
5575 | free_bp_location (*blp); | |
5576 | *blp = NULL; | |
5577 | } | |
5578 | ||
4a64f543 MS |
5579 | /* Helper to set_raw_breakpoint below. Creates a breakpoint that has |
5580 | type BPTYPE and has no locations as yet. */ | |
5581 | /* This function is used in gdbtk sources and thus can not be made | |
5582 | static. */ | |
c906108c | 5583 | |
c40e75cd | 5584 | static struct breakpoint * |
a6d9a66e UW |
5585 | set_raw_breakpoint_without_location (struct gdbarch *gdbarch, |
5586 | enum bptype bptype) | |
c906108c | 5587 | { |
52f0bd74 | 5588 | struct breakpoint *b, *b1; |
c906108c SS |
5589 | |
5590 | b = (struct breakpoint *) xmalloc (sizeof (struct breakpoint)); | |
5591 | memset (b, 0, sizeof (*b)); | |
2219d63c | 5592 | |
4d28f7a8 | 5593 | b->type = bptype; |
a6d9a66e | 5594 | b->gdbarch = gdbarch; |
c906108c SS |
5595 | b->language = current_language->la_language; |
5596 | b->input_radix = input_radix; | |
5597 | b->thread = -1; | |
b5de0fa7 | 5598 | b->enable_state = bp_enabled; |
c906108c SS |
5599 | b->next = 0; |
5600 | b->silent = 0; | |
5601 | b->ignore_count = 0; | |
5602 | b->commands = NULL; | |
818dd999 | 5603 | b->frame_id = null_frame_id; |
3a3e9ee3 | 5604 | b->forked_inferior_pid = null_ptid; |
c906108c | 5605 | b->exec_pathname = NULL; |
a96d9b2e | 5606 | b->syscalls_to_be_caught = NULL; |
3086aeae | 5607 | b->ops = NULL; |
0d381245 | 5608 | b->condition_not_parsed = 0; |
84f4c1fe | 5609 | b->py_bp_object = NULL; |
c906108c | 5610 | |
4a64f543 MS |
5611 | /* Add this breakpoint to the end of the chain so that a list of |
5612 | breakpoints will come out in order of increasing numbers. */ | |
c906108c SS |
5613 | |
5614 | b1 = breakpoint_chain; | |
5615 | if (b1 == 0) | |
5616 | breakpoint_chain = b; | |
5617 | else | |
5618 | { | |
5619 | while (b1->next) | |
5620 | b1 = b1->next; | |
5621 | b1->next = b; | |
5622 | } | |
0d381245 VP |
5623 | return b; |
5624 | } | |
5625 | ||
5626 | /* Initialize loc->function_name. */ | |
5627 | static void | |
5628 | set_breakpoint_location_function (struct bp_location *loc) | |
5629 | { | |
2bdf28a0 JK |
5630 | gdb_assert (loc->owner != NULL); |
5631 | ||
0d381245 | 5632 | if (loc->owner->type == bp_breakpoint |
1042e4c0 | 5633 | || loc->owner->type == bp_hardware_breakpoint |
d77f58be | 5634 | || is_tracepoint (loc->owner)) |
0d381245 VP |
5635 | { |
5636 | find_pc_partial_function (loc->address, &(loc->function_name), | |
5637 | NULL, NULL); | |
5638 | if (loc->function_name) | |
5639 | loc->function_name = xstrdup (loc->function_name); | |
5640 | } | |
5641 | } | |
5642 | ||
a6d9a66e UW |
5643 | /* Attempt to determine architecture of location identified by SAL. */ |
5644 | static struct gdbarch * | |
5645 | get_sal_arch (struct symtab_and_line sal) | |
5646 | { | |
5647 | if (sal.section) | |
5648 | return get_objfile_arch (sal.section->objfile); | |
5649 | if (sal.symtab) | |
5650 | return get_objfile_arch (sal.symtab->objfile); | |
5651 | ||
5652 | return NULL; | |
5653 | } | |
5654 | ||
0d381245 VP |
5655 | /* set_raw_breakpoint is a low level routine for allocating and |
5656 | partially initializing a breakpoint of type BPTYPE. The newly | |
5657 | created breakpoint's address, section, source file name, and line | |
5658 | number are provided by SAL. The newly created and partially | |
5659 | initialized breakpoint is added to the breakpoint chain and | |
5660 | is also returned as the value of this function. | |
5661 | ||
5662 | It is expected that the caller will complete the initialization of | |
5663 | the newly created breakpoint struct as well as output any status | |
5664 | information regarding the creation of a new breakpoint. In | |
5665 | particular, set_raw_breakpoint does NOT set the breakpoint | |
5666 | number! Care should be taken to not allow an error to occur | |
5667 | prior to completing the initialization of the breakpoint. If this | |
5668 | should happen, a bogus breakpoint will be left on the chain. */ | |
5669 | ||
63c252f8 | 5670 | struct breakpoint * |
a6d9a66e UW |
5671 | set_raw_breakpoint (struct gdbarch *gdbarch, |
5672 | struct symtab_and_line sal, enum bptype bptype) | |
0d381245 | 5673 | { |
4a64f543 MS |
5674 | struct breakpoint *b = set_raw_breakpoint_without_location (gdbarch, |
5675 | bptype); | |
0d381245 | 5676 | CORE_ADDR adjusted_address; |
a6d9a66e UW |
5677 | struct gdbarch *loc_gdbarch; |
5678 | ||
5679 | loc_gdbarch = get_sal_arch (sal); | |
5680 | if (!loc_gdbarch) | |
5681 | loc_gdbarch = b->gdbarch; | |
0d381245 | 5682 | |
6c95b8df PA |
5683 | if (bptype != bp_catchpoint) |
5684 | gdb_assert (sal.pspace != NULL); | |
5685 | ||
0d381245 VP |
5686 | /* Adjust the breakpoint's address prior to allocating a location. |
5687 | Once we call allocate_bp_location(), that mostly uninitialized | |
5688 | location will be placed on the location chain. Adjustment of the | |
8defab1a | 5689 | breakpoint may cause target_read_memory() to be called and we do |
0d381245 VP |
5690 | not want its scan of the location chain to find a breakpoint and |
5691 | location that's only been partially initialized. */ | |
4a64f543 MS |
5692 | adjusted_address = adjust_breakpoint_address (loc_gdbarch, |
5693 | sal.pc, b->type); | |
0d381245 | 5694 | |
39d61571 | 5695 | b->loc = allocate_bp_location (b); |
a6d9a66e | 5696 | b->loc->gdbarch = loc_gdbarch; |
0d381245 VP |
5697 | b->loc->requested_address = sal.pc; |
5698 | b->loc->address = adjusted_address; | |
6c95b8df PA |
5699 | b->loc->pspace = sal.pspace; |
5700 | ||
5701 | /* Store the program space that was used to set the breakpoint, for | |
5702 | breakpoint resetting. */ | |
5703 | b->pspace = sal.pspace; | |
0d381245 VP |
5704 | |
5705 | if (sal.symtab == NULL) | |
5706 | b->source_file = NULL; | |
5707 | else | |
1b36a34b | 5708 | b->source_file = xstrdup (sal.symtab->filename); |
0d381245 VP |
5709 | b->loc->section = sal.section; |
5710 | b->line_number = sal.line; | |
5711 | ||
5712 | set_breakpoint_location_function (b->loc); | |
c906108c | 5713 | |
c906108c SS |
5714 | breakpoints_changed (); |
5715 | ||
5716 | return b; | |
5717 | } | |
5718 | ||
c2c6d25f JM |
5719 | |
5720 | /* Note that the breakpoint object B describes a permanent breakpoint | |
5721 | instruction, hard-wired into the inferior's code. */ | |
5722 | void | |
5723 | make_breakpoint_permanent (struct breakpoint *b) | |
5724 | { | |
0d381245 | 5725 | struct bp_location *bl; |
cc59ec59 | 5726 | |
b5de0fa7 | 5727 | b->enable_state = bp_permanent; |
c2c6d25f | 5728 | |
4a64f543 MS |
5729 | /* By definition, permanent breakpoints are already present in the |
5730 | code. Mark all locations as inserted. For now, | |
5731 | make_breakpoint_permanent is called in just one place, so it's | |
5732 | hard to say if it's reasonable to have permanent breakpoint with | |
5733 | multiple locations or not, but it's easy to implmement. */ | |
0d381245 VP |
5734 | for (bl = b->loc; bl; bl = bl->next) |
5735 | bl->inserted = 1; | |
c2c6d25f JM |
5736 | } |
5737 | ||
53a5351d | 5738 | /* Call this routine when stepping and nexting to enable a breakpoint |
186c406b TT |
5739 | if we do a longjmp() or 'throw' in TP. FRAME is the frame which |
5740 | initiated the operation. */ | |
c906108c SS |
5741 | |
5742 | void | |
186c406b | 5743 | set_longjmp_breakpoint (struct thread_info *tp, struct frame_id frame) |
c906108c | 5744 | { |
35df4500 | 5745 | struct breakpoint *b, *b_tmp; |
186c406b | 5746 | int thread = tp->num; |
0fd8e87f UW |
5747 | |
5748 | /* To avoid having to rescan all objfile symbols at every step, | |
5749 | we maintain a list of continually-inserted but always disabled | |
5750 | longjmp "master" breakpoints. Here, we simply create momentary | |
5751 | clones of those and enable them for the requested thread. */ | |
35df4500 | 5752 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
6c95b8df | 5753 | if (b->pspace == current_program_space |
186c406b TT |
5754 | && (b->type == bp_longjmp_master |
5755 | || b->type == bp_exception_master)) | |
0fd8e87f UW |
5756 | { |
5757 | struct breakpoint *clone = clone_momentary_breakpoint (b); | |
cc59ec59 | 5758 | |
186c406b | 5759 | clone->type = b->type == bp_longjmp_master ? bp_longjmp : bp_exception; |
0fd8e87f UW |
5760 | clone->thread = thread; |
5761 | } | |
186c406b TT |
5762 | |
5763 | tp->initiating_frame = frame; | |
c906108c SS |
5764 | } |
5765 | ||
611c83ae | 5766 | /* Delete all longjmp breakpoints from THREAD. */ |
c906108c | 5767 | void |
611c83ae | 5768 | delete_longjmp_breakpoint (int thread) |
c906108c | 5769 | { |
35df4500 | 5770 | struct breakpoint *b, *b_tmp; |
c906108c | 5771 | |
35df4500 | 5772 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
186c406b | 5773 | if (b->type == bp_longjmp || b->type == bp_exception) |
611c83ae PA |
5774 | { |
5775 | if (b->thread == thread) | |
5776 | delete_breakpoint (b); | |
5777 | } | |
c906108c SS |
5778 | } |
5779 | ||
1900040c MS |
5780 | void |
5781 | enable_overlay_breakpoints (void) | |
5782 | { | |
52f0bd74 | 5783 | struct breakpoint *b; |
1900040c MS |
5784 | |
5785 | ALL_BREAKPOINTS (b) | |
5786 | if (b->type == bp_overlay_event) | |
5787 | { | |
5788 | b->enable_state = bp_enabled; | |
b60e7edf | 5789 | update_global_location_list (1); |
c02f5703 | 5790 | overlay_events_enabled = 1; |
1900040c MS |
5791 | } |
5792 | } | |
5793 | ||
5794 | void | |
5795 | disable_overlay_breakpoints (void) | |
5796 | { | |
52f0bd74 | 5797 | struct breakpoint *b; |
1900040c MS |
5798 | |
5799 | ALL_BREAKPOINTS (b) | |
5800 | if (b->type == bp_overlay_event) | |
5801 | { | |
5802 | b->enable_state = bp_disabled; | |
b60e7edf | 5803 | update_global_location_list (0); |
c02f5703 | 5804 | overlay_events_enabled = 0; |
1900040c MS |
5805 | } |
5806 | } | |
5807 | ||
aa7d318d TT |
5808 | /* Set an active std::terminate breakpoint for each std::terminate |
5809 | master breakpoint. */ | |
5810 | void | |
5811 | set_std_terminate_breakpoint (void) | |
5812 | { | |
35df4500 | 5813 | struct breakpoint *b, *b_tmp; |
aa7d318d | 5814 | |
35df4500 | 5815 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
aa7d318d TT |
5816 | if (b->pspace == current_program_space |
5817 | && b->type == bp_std_terminate_master) | |
5818 | { | |
5819 | struct breakpoint *clone = clone_momentary_breakpoint (b); | |
5820 | clone->type = bp_std_terminate; | |
5821 | } | |
5822 | } | |
5823 | ||
5824 | /* Delete all the std::terminate breakpoints. */ | |
5825 | void | |
5826 | delete_std_terminate_breakpoint (void) | |
5827 | { | |
35df4500 | 5828 | struct breakpoint *b, *b_tmp; |
aa7d318d | 5829 | |
35df4500 | 5830 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
aa7d318d TT |
5831 | if (b->type == bp_std_terminate) |
5832 | delete_breakpoint (b); | |
5833 | } | |
5834 | ||
c4093a6a | 5835 | struct breakpoint * |
a6d9a66e | 5836 | create_thread_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) |
c4093a6a JM |
5837 | { |
5838 | struct breakpoint *b; | |
c4093a6a | 5839 | |
a6d9a66e | 5840 | b = create_internal_breakpoint (gdbarch, address, bp_thread_event); |
c4093a6a | 5841 | |
b5de0fa7 | 5842 | b->enable_state = bp_enabled; |
c4093a6a | 5843 | /* addr_string has to be used or breakpoint_re_set will delete me. */ |
5af949e3 UW |
5844 | b->addr_string |
5845 | = xstrprintf ("*%s", paddress (b->loc->gdbarch, b->loc->address)); | |
c4093a6a | 5846 | |
b60e7edf | 5847 | update_global_location_list_nothrow (1); |
74960c60 | 5848 | |
c4093a6a JM |
5849 | return b; |
5850 | } | |
5851 | ||
5852 | void | |
5853 | remove_thread_event_breakpoints (void) | |
5854 | { | |
35df4500 | 5855 | struct breakpoint *b, *b_tmp; |
c4093a6a | 5856 | |
35df4500 | 5857 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
6c95b8df PA |
5858 | if (b->type == bp_thread_event |
5859 | && b->loc->pspace == current_program_space) | |
c4093a6a JM |
5860 | delete_breakpoint (b); |
5861 | } | |
5862 | ||
0101ce28 JJ |
5863 | struct captured_parse_breakpoint_args |
5864 | { | |
5865 | char **arg_p; | |
5866 | struct symtabs_and_lines *sals_p; | |
5867 | char ***addr_string_p; | |
5868 | int *not_found_ptr; | |
5869 | }; | |
5870 | ||
5871 | struct lang_and_radix | |
5872 | { | |
5873 | enum language lang; | |
5874 | int radix; | |
5875 | }; | |
5876 | ||
4efc6507 DE |
5877 | /* Create a breakpoint for JIT code registration and unregistration. */ |
5878 | ||
5879 | struct breakpoint * | |
5880 | create_jit_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) | |
5881 | { | |
5882 | struct breakpoint *b; | |
5883 | ||
5884 | b = create_internal_breakpoint (gdbarch, address, bp_jit_event); | |
5885 | update_global_location_list_nothrow (1); | |
5886 | return b; | |
5887 | } | |
0101ce28 | 5888 | |
cae688ec JJ |
5889 | void |
5890 | remove_solib_event_breakpoints (void) | |
5891 | { | |
35df4500 | 5892 | struct breakpoint *b, *b_tmp; |
cae688ec | 5893 | |
35df4500 | 5894 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
6c95b8df PA |
5895 | if (b->type == bp_shlib_event |
5896 | && b->loc->pspace == current_program_space) | |
cae688ec JJ |
5897 | delete_breakpoint (b); |
5898 | } | |
5899 | ||
5900 | struct breakpoint * | |
a6d9a66e | 5901 | create_solib_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) |
cae688ec JJ |
5902 | { |
5903 | struct breakpoint *b; | |
5904 | ||
a6d9a66e | 5905 | b = create_internal_breakpoint (gdbarch, address, bp_shlib_event); |
b60e7edf | 5906 | update_global_location_list_nothrow (1); |
cae688ec JJ |
5907 | return b; |
5908 | } | |
5909 | ||
5910 | /* Disable any breakpoints that are on code in shared libraries. Only | |
5911 | apply to enabled breakpoints, disabled ones can just stay disabled. */ | |
5912 | ||
5913 | void | |
cb851954 | 5914 | disable_breakpoints_in_shlibs (void) |
cae688ec | 5915 | { |
876fa593 | 5916 | struct bp_location *loc, **locp_tmp; |
cae688ec | 5917 | |
876fa593 | 5918 | ALL_BP_LOCATIONS (loc, locp_tmp) |
cae688ec | 5919 | { |
2bdf28a0 | 5920 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always non-NULL. */ |
0d381245 | 5921 | struct breakpoint *b = loc->owner; |
2bdf28a0 | 5922 | |
4a64f543 MS |
5923 | /* We apply the check to all breakpoints, including disabled for |
5924 | those with loc->duplicate set. This is so that when breakpoint | |
5925 | becomes enabled, or the duplicate is removed, gdb will try to | |
5926 | insert all breakpoints. If we don't set shlib_disabled here, | |
5927 | we'll try to insert those breakpoints and fail. */ | |
1042e4c0 | 5928 | if (((b->type == bp_breakpoint) |
508ccb1f | 5929 | || (b->type == bp_jit_event) |
1042e4c0 | 5930 | || (b->type == bp_hardware_breakpoint) |
d77f58be | 5931 | || (is_tracepoint (b))) |
6c95b8df | 5932 | && loc->pspace == current_program_space |
0d381245 | 5933 | && !loc->shlib_disabled |
a77053c2 | 5934 | #ifdef PC_SOLIB |
0d381245 | 5935 | && PC_SOLIB (loc->address) |
a77053c2 | 5936 | #else |
6c95b8df | 5937 | && solib_name_from_address (loc->pspace, loc->address) |
a77053c2 MK |
5938 | #endif |
5939 | ) | |
0d381245 VP |
5940 | { |
5941 | loc->shlib_disabled = 1; | |
5942 | } | |
cae688ec JJ |
5943 | } |
5944 | } | |
5945 | ||
4a64f543 MS |
5946 | /* Disable any breakpoints that are in in an unloaded shared library. |
5947 | Only apply to enabled breakpoints, disabled ones can just stay | |
5948 | disabled. */ | |
84acb35a | 5949 | |
75149521 | 5950 | static void |
84acb35a JJ |
5951 | disable_breakpoints_in_unloaded_shlib (struct so_list *solib) |
5952 | { | |
876fa593 | 5953 | struct bp_location *loc, **locp_tmp; |
84acb35a JJ |
5954 | int disabled_shlib_breaks = 0; |
5955 | ||
c86cf029 VP |
5956 | /* SunOS a.out shared libraries are always mapped, so do not |
5957 | disable breakpoints; they will only be reported as unloaded | |
5958 | through clear_solib when GDB discards its shared library | |
5959 | list. See clear_solib for more information. */ | |
5960 | if (exec_bfd != NULL | |
5961 | && bfd_get_flavour (exec_bfd) == bfd_target_aout_flavour) | |
5962 | return; | |
5963 | ||
876fa593 | 5964 | ALL_BP_LOCATIONS (loc, locp_tmp) |
84acb35a | 5965 | { |
2bdf28a0 | 5966 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always non-NULL. */ |
0d381245 | 5967 | struct breakpoint *b = loc->owner; |
cc59ec59 | 5968 | |
0d381245 VP |
5969 | if ((loc->loc_type == bp_loc_hardware_breakpoint |
5970 | || loc->loc_type == bp_loc_software_breakpoint) | |
6c95b8df | 5971 | && solib->pspace == loc->pspace |
e2dd7057 | 5972 | && !loc->shlib_disabled |
508ccb1f TT |
5973 | && (b->type == bp_breakpoint |
5974 | || b->type == bp_jit_event | |
5975 | || b->type == bp_hardware_breakpoint) | |
e2dd7057 | 5976 | && solib_contains_address_p (solib, loc->address)) |
84acb35a | 5977 | { |
e2dd7057 PP |
5978 | loc->shlib_disabled = 1; |
5979 | /* At this point, we cannot rely on remove_breakpoint | |
5980 | succeeding so we must mark the breakpoint as not inserted | |
5981 | to prevent future errors occurring in remove_breakpoints. */ | |
5982 | loc->inserted = 0; | |
5983 | if (!disabled_shlib_breaks) | |
5984 | { | |
5985 | target_terminal_ours_for_output (); | |
3e43a32a MS |
5986 | warning (_("Temporarily disabling breakpoints " |
5987 | "for unloaded shared library \"%s\""), | |
e2dd7057 | 5988 | solib->so_name); |
84acb35a | 5989 | } |
e2dd7057 | 5990 | disabled_shlib_breaks = 1; |
84acb35a JJ |
5991 | } |
5992 | } | |
84acb35a JJ |
5993 | } |
5994 | ||
ce78b96d JB |
5995 | /* FORK & VFORK catchpoints. */ |
5996 | ||
4a64f543 MS |
5997 | /* Implement the "insert" breakpoint_ops method for fork |
5998 | catchpoints. */ | |
ce78b96d | 5999 | |
c906108c | 6000 | static void |
ce78b96d JB |
6001 | insert_catch_fork (struct breakpoint *b) |
6002 | { | |
6003 | target_insert_fork_catchpoint (PIDGET (inferior_ptid)); | |
6004 | } | |
6005 | ||
4a64f543 MS |
6006 | /* Implement the "remove" breakpoint_ops method for fork |
6007 | catchpoints. */ | |
ce78b96d JB |
6008 | |
6009 | static int | |
6010 | remove_catch_fork (struct breakpoint *b) | |
6011 | { | |
6012 | return target_remove_fork_catchpoint (PIDGET (inferior_ptid)); | |
6013 | } | |
6014 | ||
6015 | /* Implement the "breakpoint_hit" breakpoint_ops method for fork | |
6016 | catchpoints. */ | |
6017 | ||
6018 | static int | |
6019 | breakpoint_hit_catch_fork (struct breakpoint *b) | |
6020 | { | |
6021 | return inferior_has_forked (inferior_ptid, &b->forked_inferior_pid); | |
6022 | } | |
6023 | ||
4a64f543 MS |
6024 | /* Implement the "print_it" breakpoint_ops method for fork |
6025 | catchpoints. */ | |
ce78b96d JB |
6026 | |
6027 | static enum print_stop_action | |
6028 | print_it_catch_fork (struct breakpoint *b) | |
6029 | { | |
6030 | annotate_catchpoint (b->number); | |
6031 | printf_filtered (_("\nCatchpoint %d (forked process %d), "), | |
6032 | b->number, ptid_get_pid (b->forked_inferior_pid)); | |
6033 | return PRINT_SRC_AND_LOC; | |
6034 | } | |
6035 | ||
4a64f543 MS |
6036 | /* Implement the "print_one" breakpoint_ops method for fork |
6037 | catchpoints. */ | |
ce78b96d JB |
6038 | |
6039 | static void | |
a6d9a66e | 6040 | print_one_catch_fork (struct breakpoint *b, struct bp_location **last_loc) |
ce78b96d | 6041 | { |
79a45b7d TT |
6042 | struct value_print_options opts; |
6043 | ||
6044 | get_user_print_options (&opts); | |
6045 | ||
4a64f543 MS |
6046 | /* Field 4, the address, is omitted (which makes the columns not |
6047 | line up too nicely with the headers, but the effect is relatively | |
6048 | readable). */ | |
79a45b7d | 6049 | if (opts.addressprint) |
ce78b96d JB |
6050 | ui_out_field_skip (uiout, "addr"); |
6051 | annotate_field (5); | |
6052 | ui_out_text (uiout, "fork"); | |
6053 | if (!ptid_equal (b->forked_inferior_pid, null_ptid)) | |
6054 | { | |
6055 | ui_out_text (uiout, ", process "); | |
6056 | ui_out_field_int (uiout, "what", | |
6057 | ptid_get_pid (b->forked_inferior_pid)); | |
6058 | ui_out_spaces (uiout, 1); | |
6059 | } | |
6060 | } | |
6061 | ||
6062 | /* Implement the "print_mention" breakpoint_ops method for fork | |
6063 | catchpoints. */ | |
6064 | ||
6065 | static void | |
6066 | print_mention_catch_fork (struct breakpoint *b) | |
6067 | { | |
6068 | printf_filtered (_("Catchpoint %d (fork)"), b->number); | |
6069 | } | |
6070 | ||
6149aea9 PA |
6071 | /* Implement the "print_recreate" breakpoint_ops method for fork |
6072 | catchpoints. */ | |
6073 | ||
6074 | static void | |
6075 | print_recreate_catch_fork (struct breakpoint *b, struct ui_file *fp) | |
6076 | { | |
6077 | fprintf_unfiltered (fp, "catch fork"); | |
6078 | } | |
6079 | ||
ce78b96d JB |
6080 | /* The breakpoint_ops structure to be used in fork catchpoints. */ |
6081 | ||
6082 | static struct breakpoint_ops catch_fork_breakpoint_ops = | |
6083 | { | |
6084 | insert_catch_fork, | |
6085 | remove_catch_fork, | |
6086 | breakpoint_hit_catch_fork, | |
6087 | print_it_catch_fork, | |
6088 | print_one_catch_fork, | |
6149aea9 PA |
6089 | print_mention_catch_fork, |
6090 | print_recreate_catch_fork | |
ce78b96d JB |
6091 | }; |
6092 | ||
4a64f543 MS |
6093 | /* Implement the "insert" breakpoint_ops method for vfork |
6094 | catchpoints. */ | |
ce78b96d JB |
6095 | |
6096 | static void | |
6097 | insert_catch_vfork (struct breakpoint *b) | |
6098 | { | |
6099 | target_insert_vfork_catchpoint (PIDGET (inferior_ptid)); | |
6100 | } | |
6101 | ||
4a64f543 MS |
6102 | /* Implement the "remove" breakpoint_ops method for vfork |
6103 | catchpoints. */ | |
ce78b96d JB |
6104 | |
6105 | static int | |
6106 | remove_catch_vfork (struct breakpoint *b) | |
6107 | { | |
6108 | return target_remove_vfork_catchpoint (PIDGET (inferior_ptid)); | |
6109 | } | |
6110 | ||
6111 | /* Implement the "breakpoint_hit" breakpoint_ops method for vfork | |
6112 | catchpoints. */ | |
6113 | ||
6114 | static int | |
6115 | breakpoint_hit_catch_vfork (struct breakpoint *b) | |
6116 | { | |
6117 | return inferior_has_vforked (inferior_ptid, &b->forked_inferior_pid); | |
6118 | } | |
6119 | ||
4a64f543 MS |
6120 | /* Implement the "print_it" breakpoint_ops method for vfork |
6121 | catchpoints. */ | |
ce78b96d JB |
6122 | |
6123 | static enum print_stop_action | |
6124 | print_it_catch_vfork (struct breakpoint *b) | |
6125 | { | |
6126 | annotate_catchpoint (b->number); | |
6127 | printf_filtered (_("\nCatchpoint %d (vforked process %d), "), | |
6128 | b->number, ptid_get_pid (b->forked_inferior_pid)); | |
6129 | return PRINT_SRC_AND_LOC; | |
6130 | } | |
6131 | ||
4a64f543 MS |
6132 | /* Implement the "print_one" breakpoint_ops method for vfork |
6133 | catchpoints. */ | |
ce78b96d JB |
6134 | |
6135 | static void | |
a6d9a66e | 6136 | print_one_catch_vfork (struct breakpoint *b, struct bp_location **last_loc) |
ce78b96d | 6137 | { |
79a45b7d TT |
6138 | struct value_print_options opts; |
6139 | ||
6140 | get_user_print_options (&opts); | |
4a64f543 MS |
6141 | /* Field 4, the address, is omitted (which makes the columns not |
6142 | line up too nicely with the headers, but the effect is relatively | |
6143 | readable). */ | |
79a45b7d | 6144 | if (opts.addressprint) |
ce78b96d JB |
6145 | ui_out_field_skip (uiout, "addr"); |
6146 | annotate_field (5); | |
6147 | ui_out_text (uiout, "vfork"); | |
6148 | if (!ptid_equal (b->forked_inferior_pid, null_ptid)) | |
6149 | { | |
6150 | ui_out_text (uiout, ", process "); | |
6151 | ui_out_field_int (uiout, "what", | |
6152 | ptid_get_pid (b->forked_inferior_pid)); | |
6153 | ui_out_spaces (uiout, 1); | |
6154 | } | |
6155 | } | |
6156 | ||
6157 | /* Implement the "print_mention" breakpoint_ops method for vfork | |
6158 | catchpoints. */ | |
6159 | ||
6160 | static void | |
6161 | print_mention_catch_vfork (struct breakpoint *b) | |
6162 | { | |
6163 | printf_filtered (_("Catchpoint %d (vfork)"), b->number); | |
6164 | } | |
6165 | ||
6149aea9 PA |
6166 | /* Implement the "print_recreate" breakpoint_ops method for vfork |
6167 | catchpoints. */ | |
6168 | ||
6169 | static void | |
6170 | print_recreate_catch_vfork (struct breakpoint *b, struct ui_file *fp) | |
6171 | { | |
6172 | fprintf_unfiltered (fp, "catch vfork"); | |
6173 | } | |
6174 | ||
ce78b96d JB |
6175 | /* The breakpoint_ops structure to be used in vfork catchpoints. */ |
6176 | ||
6177 | static struct breakpoint_ops catch_vfork_breakpoint_ops = | |
6178 | { | |
6179 | insert_catch_vfork, | |
6180 | remove_catch_vfork, | |
6181 | breakpoint_hit_catch_vfork, | |
6182 | print_it_catch_vfork, | |
6183 | print_one_catch_vfork, | |
6149aea9 PA |
6184 | print_mention_catch_vfork, |
6185 | print_recreate_catch_vfork | |
ce78b96d JB |
6186 | }; |
6187 | ||
a96d9b2e SDJ |
6188 | /* Implement the "insert" breakpoint_ops method for syscall |
6189 | catchpoints. */ | |
6190 | ||
6191 | static void | |
6192 | insert_catch_syscall (struct breakpoint *b) | |
6193 | { | |
6194 | struct inferior *inf = current_inferior (); | |
6195 | ||
6196 | ++inf->total_syscalls_count; | |
6197 | if (!b->syscalls_to_be_caught) | |
6198 | ++inf->any_syscall_count; | |
6199 | else | |
6200 | { | |
6201 | int i, iter; | |
cc59ec59 | 6202 | |
a96d9b2e SDJ |
6203 | for (i = 0; |
6204 | VEC_iterate (int, b->syscalls_to_be_caught, i, iter); | |
6205 | i++) | |
6206 | { | |
6207 | int elem; | |
cc59ec59 | 6208 | |
a96d9b2e SDJ |
6209 | if (iter >= VEC_length (int, inf->syscalls_counts)) |
6210 | { | |
6211 | int old_size = VEC_length (int, inf->syscalls_counts); | |
3e43a32a MS |
6212 | uintptr_t vec_addr_offset |
6213 | = old_size * ((uintptr_t) sizeof (int)); | |
a96d9b2e SDJ |
6214 | uintptr_t vec_addr; |
6215 | VEC_safe_grow (int, inf->syscalls_counts, iter + 1); | |
6216 | vec_addr = (uintptr_t) VEC_address (int, inf->syscalls_counts) + | |
6217 | vec_addr_offset; | |
6218 | memset ((void *) vec_addr, 0, | |
6219 | (iter + 1 - old_size) * sizeof (int)); | |
6220 | } | |
6221 | elem = VEC_index (int, inf->syscalls_counts, iter); | |
6222 | VEC_replace (int, inf->syscalls_counts, iter, ++elem); | |
6223 | } | |
6224 | } | |
6225 | ||
6226 | target_set_syscall_catchpoint (PIDGET (inferior_ptid), | |
6227 | inf->total_syscalls_count != 0, | |
6228 | inf->any_syscall_count, | |
6229 | VEC_length (int, inf->syscalls_counts), | |
6230 | VEC_address (int, inf->syscalls_counts)); | |
6231 | } | |
6232 | ||
6233 | /* Implement the "remove" breakpoint_ops method for syscall | |
6234 | catchpoints. */ | |
6235 | ||
6236 | static int | |
6237 | remove_catch_syscall (struct breakpoint *b) | |
6238 | { | |
6239 | struct inferior *inf = current_inferior (); | |
6240 | ||
6241 | --inf->total_syscalls_count; | |
6242 | if (!b->syscalls_to_be_caught) | |
6243 | --inf->any_syscall_count; | |
6244 | else | |
6245 | { | |
6246 | int i, iter; | |
cc59ec59 | 6247 | |
a96d9b2e SDJ |
6248 | for (i = 0; |
6249 | VEC_iterate (int, b->syscalls_to_be_caught, i, iter); | |
6250 | i++) | |
6251 | { | |
6252 | int elem; | |
6253 | if (iter >= VEC_length (int, inf->syscalls_counts)) | |
6254 | /* Shouldn't happen. */ | |
6255 | continue; | |
6256 | elem = VEC_index (int, inf->syscalls_counts, iter); | |
6257 | VEC_replace (int, inf->syscalls_counts, iter, --elem); | |
6258 | } | |
6259 | } | |
6260 | ||
6261 | return target_set_syscall_catchpoint (PIDGET (inferior_ptid), | |
6262 | inf->total_syscalls_count != 0, | |
6263 | inf->any_syscall_count, | |
6264 | VEC_length (int, inf->syscalls_counts), | |
3e43a32a MS |
6265 | VEC_address (int, |
6266 | inf->syscalls_counts)); | |
a96d9b2e SDJ |
6267 | } |
6268 | ||
6269 | /* Implement the "breakpoint_hit" breakpoint_ops method for syscall | |
6270 | catchpoints. */ | |
6271 | ||
6272 | static int | |
6273 | breakpoint_hit_catch_syscall (struct breakpoint *b) | |
6274 | { | |
4a64f543 MS |
6275 | /* We must check if we are catching specific syscalls in this |
6276 | breakpoint. If we are, then we must guarantee that the called | |
6277 | syscall is the same syscall we are catching. */ | |
a96d9b2e SDJ |
6278 | int syscall_number = 0; |
6279 | ||
6280 | if (!inferior_has_called_syscall (inferior_ptid, &syscall_number)) | |
6281 | return 0; | |
6282 | ||
6283 | /* Now, checking if the syscall is the same. */ | |
6284 | if (b->syscalls_to_be_caught) | |
6285 | { | |
6286 | int i, iter; | |
cc59ec59 | 6287 | |
a96d9b2e SDJ |
6288 | for (i = 0; |
6289 | VEC_iterate (int, b->syscalls_to_be_caught, i, iter); | |
6290 | i++) | |
6291 | if (syscall_number == iter) | |
6292 | break; | |
6293 | /* Not the same. */ | |
6294 | if (!iter) | |
6295 | return 0; | |
6296 | } | |
6297 | ||
6298 | return 1; | |
6299 | } | |
6300 | ||
6301 | /* Implement the "print_it" breakpoint_ops method for syscall | |
6302 | catchpoints. */ | |
6303 | ||
6304 | static enum print_stop_action | |
6305 | print_it_catch_syscall (struct breakpoint *b) | |
6306 | { | |
6307 | /* These are needed because we want to know in which state a | |
6308 | syscall is. It can be in the TARGET_WAITKIND_SYSCALL_ENTRY | |
6309 | or TARGET_WAITKIND_SYSCALL_RETURN, and depending on it we | |
6310 | must print "called syscall" or "returned from syscall". */ | |
6311 | ptid_t ptid; | |
6312 | struct target_waitstatus last; | |
6313 | struct syscall s; | |
6314 | struct cleanup *old_chain; | |
6315 | char *syscall_id; | |
6316 | ||
6317 | get_last_target_status (&ptid, &last); | |
6318 | ||
6319 | get_syscall_by_number (last.value.syscall_number, &s); | |
6320 | ||
6321 | annotate_catchpoint (b->number); | |
6322 | ||
6323 | if (s.name == NULL) | |
6324 | syscall_id = xstrprintf ("%d", last.value.syscall_number); | |
6325 | else | |
6326 | syscall_id = xstrprintf ("'%s'", s.name); | |
6327 | ||
6328 | old_chain = make_cleanup (xfree, syscall_id); | |
6329 | ||
6330 | if (last.kind == TARGET_WAITKIND_SYSCALL_ENTRY) | |
6331 | printf_filtered (_("\nCatchpoint %d (call to syscall %s), "), | |
6332 | b->number, syscall_id); | |
6333 | else if (last.kind == TARGET_WAITKIND_SYSCALL_RETURN) | |
6334 | printf_filtered (_("\nCatchpoint %d (returned from syscall %s), "), | |
6335 | b->number, syscall_id); | |
6336 | ||
6337 | do_cleanups (old_chain); | |
6338 | ||
6339 | return PRINT_SRC_AND_LOC; | |
6340 | } | |
6341 | ||
6342 | /* Implement the "print_one" breakpoint_ops method for syscall | |
6343 | catchpoints. */ | |
6344 | ||
6345 | static void | |
6346 | print_one_catch_syscall (struct breakpoint *b, | |
6347 | struct bp_location **last_loc) | |
6348 | { | |
6349 | struct value_print_options opts; | |
6350 | ||
6351 | get_user_print_options (&opts); | |
4a64f543 MS |
6352 | /* Field 4, the address, is omitted (which makes the columns not |
6353 | line up too nicely with the headers, but the effect is relatively | |
6354 | readable). */ | |
a96d9b2e SDJ |
6355 | if (opts.addressprint) |
6356 | ui_out_field_skip (uiout, "addr"); | |
6357 | annotate_field (5); | |
6358 | ||
6359 | if (b->syscalls_to_be_caught | |
6360 | && VEC_length (int, b->syscalls_to_be_caught) > 1) | |
6361 | ui_out_text (uiout, "syscalls \""); | |
6362 | else | |
6363 | ui_out_text (uiout, "syscall \""); | |
6364 | ||
6365 | if (b->syscalls_to_be_caught) | |
6366 | { | |
6367 | int i, iter; | |
6368 | char *text = xstrprintf ("%s", ""); | |
cc59ec59 | 6369 | |
a96d9b2e SDJ |
6370 | for (i = 0; |
6371 | VEC_iterate (int, b->syscalls_to_be_caught, i, iter); | |
6372 | i++) | |
6373 | { | |
6374 | char *x = text; | |
6375 | struct syscall s; | |
6376 | get_syscall_by_number (iter, &s); | |
6377 | ||
6378 | if (s.name != NULL) | |
6379 | text = xstrprintf ("%s%s, ", text, s.name); | |
6380 | else | |
6381 | text = xstrprintf ("%s%d, ", text, iter); | |
6382 | ||
6383 | /* We have to xfree the last 'text' (now stored at 'x') | |
6384 | because xstrprintf dinamically allocates new space for it | |
6385 | on every call. */ | |
6386 | xfree (x); | |
6387 | } | |
6388 | /* Remove the last comma. */ | |
6389 | text[strlen (text) - 2] = '\0'; | |
6390 | ui_out_field_string (uiout, "what", text); | |
6391 | } | |
6392 | else | |
6393 | ui_out_field_string (uiout, "what", "<any syscall>"); | |
6394 | ui_out_text (uiout, "\" "); | |
6395 | } | |
6396 | ||
6397 | /* Implement the "print_mention" breakpoint_ops method for syscall | |
6398 | catchpoints. */ | |
6399 | ||
6400 | static void | |
6401 | print_mention_catch_syscall (struct breakpoint *b) | |
6402 | { | |
6403 | if (b->syscalls_to_be_caught) | |
6404 | { | |
6405 | int i, iter; | |
6406 | ||
6407 | if (VEC_length (int, b->syscalls_to_be_caught) > 1) | |
6408 | printf_filtered (_("Catchpoint %d (syscalls"), b->number); | |
6409 | else | |
6410 | printf_filtered (_("Catchpoint %d (syscall"), b->number); | |
6411 | ||
6412 | for (i = 0; | |
6413 | VEC_iterate (int, b->syscalls_to_be_caught, i, iter); | |
6414 | i++) | |
6415 | { | |
6416 | struct syscall s; | |
6417 | get_syscall_by_number (iter, &s); | |
6418 | ||
6419 | if (s.name) | |
6420 | printf_filtered (" '%s' [%d]", s.name, s.number); | |
6421 | else | |
6422 | printf_filtered (" %d", s.number); | |
6423 | } | |
6424 | printf_filtered (")"); | |
6425 | } | |
6426 | else | |
6427 | printf_filtered (_("Catchpoint %d (any syscall)"), | |
6428 | b->number); | |
6429 | } | |
6430 | ||
6149aea9 PA |
6431 | /* Implement the "print_recreate" breakpoint_ops method for syscall |
6432 | catchpoints. */ | |
6433 | ||
6434 | static void | |
6435 | print_recreate_catch_syscall (struct breakpoint *b, struct ui_file *fp) | |
6436 | { | |
6437 | fprintf_unfiltered (fp, "catch syscall"); | |
6438 | ||
6439 | if (b->syscalls_to_be_caught) | |
6440 | { | |
6441 | int i, iter; | |
6442 | ||
6443 | for (i = 0; | |
6444 | VEC_iterate (int, b->syscalls_to_be_caught, i, iter); | |
6445 | i++) | |
6446 | { | |
6447 | struct syscall s; | |
6448 | ||
6449 | get_syscall_by_number (iter, &s); | |
6450 | if (s.name) | |
6451 | fprintf_unfiltered (fp, " %s", s.name); | |
6452 | else | |
6453 | fprintf_unfiltered (fp, " %d", s.number); | |
6454 | } | |
6455 | } | |
6456 | } | |
6457 | ||
a96d9b2e SDJ |
6458 | /* The breakpoint_ops structure to be used in syscall catchpoints. */ |
6459 | ||
6460 | static struct breakpoint_ops catch_syscall_breakpoint_ops = | |
6461 | { | |
6462 | insert_catch_syscall, | |
6463 | remove_catch_syscall, | |
6464 | breakpoint_hit_catch_syscall, | |
6465 | print_it_catch_syscall, | |
6466 | print_one_catch_syscall, | |
6149aea9 PA |
6467 | print_mention_catch_syscall, |
6468 | print_recreate_catch_syscall | |
a96d9b2e SDJ |
6469 | }; |
6470 | ||
6471 | /* Returns non-zero if 'b' is a syscall catchpoint. */ | |
6472 | ||
6473 | static int | |
6474 | syscall_catchpoint_p (struct breakpoint *b) | |
6475 | { | |
6476 | return (b->ops == &catch_syscall_breakpoint_ops); | |
6477 | } | |
6478 | ||
6479 | /* Create a new breakpoint of the bp_catchpoint kind and return it, | |
6480 | but does NOT mention it nor update the global location list. | |
6481 | This is useful if you need to fill more fields in the | |
6482 | struct breakpoint before calling mention. | |
ce78b96d JB |
6483 | |
6484 | If TEMPFLAG is non-zero, then make the breakpoint temporary. | |
6485 | If COND_STRING is not NULL, then store it in the breakpoint. | |
6486 | OPS, if not NULL, is the breakpoint_ops structure associated | |
6487 | to the catchpoint. */ | |
6488 | ||
6489 | static struct breakpoint * | |
a96d9b2e SDJ |
6490 | create_catchpoint_without_mention (struct gdbarch *gdbarch, int tempflag, |
6491 | char *cond_string, | |
6492 | struct breakpoint_ops *ops) | |
c906108c | 6493 | { |
c5aa993b JM |
6494 | struct symtab_and_line sal; |
6495 | struct breakpoint *b; | |
c5aa993b | 6496 | |
fe39c653 | 6497 | init_sal (&sal); |
6c95b8df | 6498 | sal.pspace = current_program_space; |
c5aa993b | 6499 | |
a6d9a66e | 6500 | b = set_raw_breakpoint (gdbarch, sal, bp_catchpoint); |
c906108c SS |
6501 | set_breakpoint_count (breakpoint_count + 1); |
6502 | b->number = breakpoint_count; | |
ce78b96d | 6503 | |
1b36a34b | 6504 | b->cond_string = (cond_string == NULL) ? NULL : xstrdup (cond_string); |
ce78b96d | 6505 | b->thread = -1; |
c906108c | 6506 | b->addr_string = NULL; |
b5de0fa7 EZ |
6507 | b->enable_state = bp_enabled; |
6508 | b->disposition = tempflag ? disp_del : disp_donttouch; | |
ce78b96d | 6509 | b->ops = ops; |
c5aa993b | 6510 | |
a96d9b2e SDJ |
6511 | return b; |
6512 | } | |
6513 | ||
6514 | /* Create a new breakpoint of the bp_catchpoint kind and return it. | |
6515 | ||
6516 | If TEMPFLAG is non-zero, then make the breakpoint temporary. | |
6517 | If COND_STRING is not NULL, then store it in the breakpoint. | |
6518 | OPS, if not NULL, is the breakpoint_ops structure associated | |
6519 | to the catchpoint. */ | |
6520 | ||
6521 | static struct breakpoint * | |
6522 | create_catchpoint (struct gdbarch *gdbarch, int tempflag, | |
6523 | char *cond_string, struct breakpoint_ops *ops) | |
6524 | { | |
6525 | struct breakpoint *b = | |
6526 | create_catchpoint_without_mention (gdbarch, tempflag, cond_string, ops); | |
6527 | ||
c906108c | 6528 | mention (b); |
ce78b96d | 6529 | update_global_location_list (1); |
c906108c | 6530 | |
ce78b96d | 6531 | return b; |
c906108c | 6532 | } |
c5aa993b | 6533 | |
9b70b993 | 6534 | static void |
a6d9a66e UW |
6535 | create_fork_vfork_event_catchpoint (struct gdbarch *gdbarch, |
6536 | int tempflag, char *cond_string, | |
ce78b96d | 6537 | struct breakpoint_ops *ops) |
c906108c | 6538 | { |
a6d9a66e UW |
6539 | struct breakpoint *b |
6540 | = create_catchpoint (gdbarch, tempflag, cond_string, ops); | |
ce78b96d JB |
6541 | |
6542 | /* FIXME: We should put this information in a breakpoint private data | |
6543 | area. */ | |
6544 | b->forked_inferior_pid = null_ptid; | |
c906108c SS |
6545 | } |
6546 | ||
fe798b75 JB |
6547 | /* Exec catchpoints. */ |
6548 | ||
9b70b993 | 6549 | static void |
fe798b75 | 6550 | insert_catch_exec (struct breakpoint *b) |
c906108c | 6551 | { |
fe798b75 JB |
6552 | target_insert_exec_catchpoint (PIDGET (inferior_ptid)); |
6553 | } | |
c906108c | 6554 | |
fe798b75 JB |
6555 | static int |
6556 | remove_catch_exec (struct breakpoint *b) | |
6557 | { | |
6558 | return target_remove_exec_catchpoint (PIDGET (inferior_ptid)); | |
6559 | } | |
c906108c | 6560 | |
fe798b75 JB |
6561 | static int |
6562 | breakpoint_hit_catch_exec (struct breakpoint *b) | |
6563 | { | |
6564 | return inferior_has_execd (inferior_ptid, &b->exec_pathname); | |
6565 | } | |
c906108c | 6566 | |
fe798b75 JB |
6567 | static enum print_stop_action |
6568 | print_it_catch_exec (struct breakpoint *b) | |
6569 | { | |
6570 | annotate_catchpoint (b->number); | |
6571 | printf_filtered (_("\nCatchpoint %d (exec'd %s), "), b->number, | |
6572 | b->exec_pathname); | |
6573 | return PRINT_SRC_AND_LOC; | |
c906108c SS |
6574 | } |
6575 | ||
fe798b75 | 6576 | static void |
a6d9a66e | 6577 | print_one_catch_exec (struct breakpoint *b, struct bp_location **last_loc) |
fe798b75 JB |
6578 | { |
6579 | struct value_print_options opts; | |
6580 | ||
6581 | get_user_print_options (&opts); | |
6582 | ||
6583 | /* Field 4, the address, is omitted (which makes the columns | |
6584 | not line up too nicely with the headers, but the effect | |
6585 | is relatively readable). */ | |
6586 | if (opts.addressprint) | |
6587 | ui_out_field_skip (uiout, "addr"); | |
6588 | annotate_field (5); | |
6589 | ui_out_text (uiout, "exec"); | |
6590 | if (b->exec_pathname != NULL) | |
6591 | { | |
6592 | ui_out_text (uiout, ", program \""); | |
6593 | ui_out_field_string (uiout, "what", b->exec_pathname); | |
6594 | ui_out_text (uiout, "\" "); | |
6595 | } | |
6596 | } | |
6597 | ||
6598 | static void | |
6599 | print_mention_catch_exec (struct breakpoint *b) | |
6600 | { | |
6601 | printf_filtered (_("Catchpoint %d (exec)"), b->number); | |
6602 | } | |
6603 | ||
6149aea9 PA |
6604 | /* Implement the "print_recreate" breakpoint_ops method for exec |
6605 | catchpoints. */ | |
6606 | ||
6607 | static void | |
6608 | print_recreate_catch_exec (struct breakpoint *b, struct ui_file *fp) | |
6609 | { | |
6610 | fprintf_unfiltered (fp, "catch exec"); | |
6611 | } | |
6612 | ||
fe798b75 JB |
6613 | static struct breakpoint_ops catch_exec_breakpoint_ops = |
6614 | { | |
6615 | insert_catch_exec, | |
6616 | remove_catch_exec, | |
6617 | breakpoint_hit_catch_exec, | |
6618 | print_it_catch_exec, | |
6619 | print_one_catch_exec, | |
6149aea9 PA |
6620 | print_mention_catch_exec, |
6621 | print_recreate_catch_exec | |
fe798b75 JB |
6622 | }; |
6623 | ||
a96d9b2e SDJ |
6624 | static void |
6625 | create_syscall_event_catchpoint (int tempflag, VEC(int) *filter, | |
6626 | struct breakpoint_ops *ops) | |
6627 | { | |
6628 | struct gdbarch *gdbarch = get_current_arch (); | |
6629 | struct breakpoint *b = | |
6630 | create_catchpoint_without_mention (gdbarch, tempflag, NULL, ops); | |
6631 | ||
6632 | b->syscalls_to_be_caught = filter; | |
6633 | ||
6634 | /* Now, we have to mention the breakpoint and update the global | |
6635 | location list. */ | |
6636 | mention (b); | |
6637 | update_global_location_list (1); | |
6638 | } | |
6639 | ||
c906108c | 6640 | static int |
fba45db2 | 6641 | hw_breakpoint_used_count (void) |
c906108c | 6642 | { |
52f0bd74 | 6643 | struct breakpoint *b; |
c906108c SS |
6644 | int i = 0; |
6645 | ||
6646 | ALL_BREAKPOINTS (b) | |
c5aa993b | 6647 | { |
d6b74ac4 | 6648 | if (b->type == bp_hardware_breakpoint && breakpoint_enabled (b)) |
c5aa993b JM |
6649 | i++; |
6650 | } | |
c906108c SS |
6651 | |
6652 | return i; | |
6653 | } | |
6654 | ||
6655 | static int | |
fba45db2 | 6656 | hw_watchpoint_used_count (enum bptype type, int *other_type_used) |
c906108c | 6657 | { |
52f0bd74 | 6658 | struct breakpoint *b; |
c906108c SS |
6659 | int i = 0; |
6660 | ||
6661 | *other_type_used = 0; | |
6662 | ALL_BREAKPOINTS (b) | |
c5aa993b | 6663 | { |
468d015d | 6664 | if (breakpoint_enabled (b)) |
c5aa993b JM |
6665 | { |
6666 | if (b->type == type) | |
6667 | i++; | |
cc60f2e3 | 6668 | else if (is_hardware_watchpoint (b)) |
c5aa993b JM |
6669 | *other_type_used = 1; |
6670 | } | |
6671 | } | |
c906108c SS |
6672 | return i; |
6673 | } | |
6674 | ||
c906108c | 6675 | void |
fba45db2 | 6676 | disable_watchpoints_before_interactive_call_start (void) |
c906108c | 6677 | { |
c5aa993b | 6678 | struct breakpoint *b; |
c906108c SS |
6679 | |
6680 | ALL_BREAKPOINTS (b) | |
c5aa993b | 6681 | { |
cc60f2e3 | 6682 | if (is_watchpoint (b) && breakpoint_enabled (b)) |
c5aa993b | 6683 | { |
b5de0fa7 | 6684 | b->enable_state = bp_call_disabled; |
b60e7edf | 6685 | update_global_location_list (0); |
c5aa993b JM |
6686 | } |
6687 | } | |
c906108c SS |
6688 | } |
6689 | ||
6690 | void | |
fba45db2 | 6691 | enable_watchpoints_after_interactive_call_stop (void) |
c906108c | 6692 | { |
c5aa993b | 6693 | struct breakpoint *b; |
c906108c SS |
6694 | |
6695 | ALL_BREAKPOINTS (b) | |
c5aa993b | 6696 | { |
cc60f2e3 | 6697 | if (is_watchpoint (b) && b->enable_state == bp_call_disabled) |
c5aa993b | 6698 | { |
b5de0fa7 | 6699 | b->enable_state = bp_enabled; |
b60e7edf | 6700 | update_global_location_list (1); |
c5aa993b JM |
6701 | } |
6702 | } | |
c906108c SS |
6703 | } |
6704 | ||
8bea4e01 UW |
6705 | void |
6706 | disable_breakpoints_before_startup (void) | |
6707 | { | |
6708 | struct breakpoint *b; | |
6709 | int found = 0; | |
6710 | ||
6711 | ALL_BREAKPOINTS (b) | |
6712 | { | |
6c95b8df PA |
6713 | if (b->pspace != current_program_space) |
6714 | continue; | |
6715 | ||
8bea4e01 UW |
6716 | if ((b->type == bp_breakpoint |
6717 | || b->type == bp_hardware_breakpoint) | |
6718 | && breakpoint_enabled (b)) | |
6719 | { | |
6720 | b->enable_state = bp_startup_disabled; | |
6721 | found = 1; | |
6722 | } | |
6723 | } | |
6724 | ||
6725 | if (found) | |
6726 | update_global_location_list (0); | |
6727 | ||
6c95b8df | 6728 | current_program_space->executing_startup = 1; |
8bea4e01 UW |
6729 | } |
6730 | ||
6731 | void | |
6732 | enable_breakpoints_after_startup (void) | |
6733 | { | |
6734 | struct breakpoint *b; | |
6735 | int found = 0; | |
6736 | ||
6c95b8df | 6737 | current_program_space->executing_startup = 0; |
8bea4e01 UW |
6738 | |
6739 | ALL_BREAKPOINTS (b) | |
6740 | { | |
6c95b8df PA |
6741 | if (b->pspace != current_program_space) |
6742 | continue; | |
6743 | ||
8bea4e01 UW |
6744 | if ((b->type == bp_breakpoint |
6745 | || b->type == bp_hardware_breakpoint) | |
6746 | && b->enable_state == bp_startup_disabled) | |
6747 | { | |
6748 | b->enable_state = bp_enabled; | |
6749 | found = 1; | |
6750 | } | |
6751 | } | |
6752 | ||
6753 | if (found) | |
6754 | breakpoint_re_set (); | |
6755 | } | |
6756 | ||
c906108c SS |
6757 | |
6758 | /* Set a breakpoint that will evaporate an end of command | |
6759 | at address specified by SAL. | |
6760 | Restrict it to frame FRAME if FRAME is nonzero. */ | |
6761 | ||
6762 | struct breakpoint * | |
a6d9a66e UW |
6763 | set_momentary_breakpoint (struct gdbarch *gdbarch, struct symtab_and_line sal, |
6764 | struct frame_id frame_id, enum bptype type) | |
c906108c | 6765 | { |
52f0bd74 | 6766 | struct breakpoint *b; |
edb3359d DJ |
6767 | |
6768 | /* If FRAME_ID is valid, it should be a real frame, not an inlined | |
6769 | one. */ | |
6770 | gdb_assert (!frame_id_inlined_p (frame_id)); | |
6771 | ||
a6d9a66e | 6772 | b = set_raw_breakpoint (gdbarch, sal, type); |
b5de0fa7 EZ |
6773 | b->enable_state = bp_enabled; |
6774 | b->disposition = disp_donttouch; | |
818dd999 | 6775 | b->frame_id = frame_id; |
c906108c | 6776 | |
4a64f543 MS |
6777 | /* If we're debugging a multi-threaded program, then we want |
6778 | momentary breakpoints to be active in only a single thread of | |
6779 | control. */ | |
39f77062 KB |
6780 | if (in_thread_list (inferior_ptid)) |
6781 | b->thread = pid_to_thread_id (inferior_ptid); | |
c906108c | 6782 | |
b60e7edf | 6783 | update_global_location_list_nothrow (1); |
74960c60 | 6784 | |
c906108c SS |
6785 | return b; |
6786 | } | |
611c83ae | 6787 | |
e58b0e63 PA |
6788 | /* Make a deep copy of momentary breakpoint ORIG. Returns NULL if |
6789 | ORIG is NULL. */ | |
6790 | ||
6791 | struct breakpoint * | |
6792 | clone_momentary_breakpoint (struct breakpoint *orig) | |
6793 | { | |
6794 | struct breakpoint *copy; | |
6795 | ||
6796 | /* If there's nothing to clone, then return nothing. */ | |
6797 | if (orig == NULL) | |
6798 | return NULL; | |
6799 | ||
a6d9a66e | 6800 | copy = set_raw_breakpoint_without_location (orig->gdbarch, orig->type); |
e58b0e63 PA |
6801 | copy->loc = allocate_bp_location (copy); |
6802 | set_breakpoint_location_function (copy->loc); | |
6803 | ||
a6d9a66e | 6804 | copy->loc->gdbarch = orig->loc->gdbarch; |
e58b0e63 PA |
6805 | copy->loc->requested_address = orig->loc->requested_address; |
6806 | copy->loc->address = orig->loc->address; | |
6807 | copy->loc->section = orig->loc->section; | |
6c95b8df | 6808 | copy->loc->pspace = orig->loc->pspace; |
e58b0e63 PA |
6809 | |
6810 | if (orig->source_file == NULL) | |
6811 | copy->source_file = NULL; | |
6812 | else | |
6813 | copy->source_file = xstrdup (orig->source_file); | |
6814 | ||
6815 | copy->line_number = orig->line_number; | |
6816 | copy->frame_id = orig->frame_id; | |
6817 | copy->thread = orig->thread; | |
6c95b8df | 6818 | copy->pspace = orig->pspace; |
e58b0e63 PA |
6819 | |
6820 | copy->enable_state = bp_enabled; | |
6821 | copy->disposition = disp_donttouch; | |
6822 | copy->number = internal_breakpoint_number--; | |
6823 | ||
6824 | update_global_location_list_nothrow (0); | |
6825 | return copy; | |
6826 | } | |
6827 | ||
611c83ae | 6828 | struct breakpoint * |
a6d9a66e UW |
6829 | set_momentary_breakpoint_at_pc (struct gdbarch *gdbarch, CORE_ADDR pc, |
6830 | enum bptype type) | |
611c83ae PA |
6831 | { |
6832 | struct symtab_and_line sal; | |
6833 | ||
6834 | sal = find_pc_line (pc, 0); | |
6835 | sal.pc = pc; | |
6836 | sal.section = find_pc_overlay (pc); | |
6837 | sal.explicit_pc = 1; | |
6838 | ||
a6d9a66e | 6839 | return set_momentary_breakpoint (gdbarch, sal, null_frame_id, type); |
611c83ae | 6840 | } |
c906108c | 6841 | \f |
c5aa993b | 6842 | |
c906108c SS |
6843 | /* Tell the user we have just set a breakpoint B. */ |
6844 | ||
6845 | static void | |
fba45db2 | 6846 | mention (struct breakpoint *b) |
c906108c SS |
6847 | { |
6848 | int say_where = 0; | |
fa8a61dc | 6849 | struct cleanup *ui_out_chain; |
79a45b7d TT |
6850 | struct value_print_options opts; |
6851 | ||
6852 | get_user_print_options (&opts); | |
8b93c638 | 6853 | |
9a4105ab AC |
6854 | /* FIXME: This is misplaced; mention() is called by things (like |
6855 | hitting a watchpoint) other than breakpoint creation. It should | |
6856 | be possible to clean this up and at the same time replace the | |
7f4b89d1 | 6857 | random calls to breakpoint_changed with this hook. */ |
383f836e | 6858 | observer_notify_breakpoint_created (b->number); |
c906108c | 6859 | |
3086aeae DJ |
6860 | if (b->ops != NULL && b->ops->print_mention != NULL) |
6861 | b->ops->print_mention (b); | |
6862 | else | |
6863 | switch (b->type) | |
6864 | { | |
6865 | case bp_none: | |
3e43a32a MS |
6866 | printf_filtered (_("(apparently deleted?) Eventpoint %d: "), |
6867 | b->number); | |
3086aeae DJ |
6868 | break; |
6869 | case bp_watchpoint: | |
6870 | ui_out_text (uiout, "Watchpoint "); | |
6871 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "wpt"); | |
6872 | ui_out_field_int (uiout, "number", b->number); | |
6873 | ui_out_text (uiout, ": "); | |
fa8a61dc | 6874 | ui_out_field_string (uiout, "exp", b->exp_string); |
3086aeae DJ |
6875 | do_cleanups (ui_out_chain); |
6876 | break; | |
6877 | case bp_hardware_watchpoint: | |
6878 | ui_out_text (uiout, "Hardware watchpoint "); | |
6879 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "wpt"); | |
6880 | ui_out_field_int (uiout, "number", b->number); | |
6881 | ui_out_text (uiout, ": "); | |
fa8a61dc | 6882 | ui_out_field_string (uiout, "exp", b->exp_string); |
3086aeae DJ |
6883 | do_cleanups (ui_out_chain); |
6884 | break; | |
6885 | case bp_read_watchpoint: | |
6886 | ui_out_text (uiout, "Hardware read watchpoint "); | |
6887 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "hw-rwpt"); | |
6888 | ui_out_field_int (uiout, "number", b->number); | |
6889 | ui_out_text (uiout, ": "); | |
fa8a61dc | 6890 | ui_out_field_string (uiout, "exp", b->exp_string); |
3086aeae DJ |
6891 | do_cleanups (ui_out_chain); |
6892 | break; | |
6893 | case bp_access_watchpoint: | |
6894 | ui_out_text (uiout, "Hardware access (read/write) watchpoint "); | |
6895 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "hw-awpt"); | |
6896 | ui_out_field_int (uiout, "number", b->number); | |
6897 | ui_out_text (uiout, ": "); | |
fa8a61dc | 6898 | ui_out_field_string (uiout, "exp", b->exp_string); |
3086aeae DJ |
6899 | do_cleanups (ui_out_chain); |
6900 | break; | |
6901 | case bp_breakpoint: | |
6902 | if (ui_out_is_mi_like_p (uiout)) | |
6903 | { | |
6904 | say_where = 0; | |
6905 | break; | |
6906 | } | |
2cec12e5 AR |
6907 | if (b->disposition == disp_del) |
6908 | printf_filtered (_("Temporary breakpoint")); | |
6909 | else | |
6910 | printf_filtered (_("Breakpoint")); | |
6911 | printf_filtered (_(" %d"), b->number); | |
3086aeae DJ |
6912 | say_where = 1; |
6913 | break; | |
6914 | case bp_hardware_breakpoint: | |
6915 | if (ui_out_is_mi_like_p (uiout)) | |
6916 | { | |
6917 | say_where = 0; | |
6918 | break; | |
6919 | } | |
a3f17187 | 6920 | printf_filtered (_("Hardware assisted breakpoint %d"), b->number); |
3086aeae DJ |
6921 | say_where = 1; |
6922 | break; | |
1042e4c0 SS |
6923 | case bp_tracepoint: |
6924 | if (ui_out_is_mi_like_p (uiout)) | |
6925 | { | |
6926 | say_where = 0; | |
6927 | break; | |
6928 | } | |
6929 | printf_filtered (_("Tracepoint")); | |
6930 | printf_filtered (_(" %d"), b->number); | |
6931 | say_where = 1; | |
6932 | break; | |
7a697b8d SS |
6933 | case bp_fast_tracepoint: |
6934 | if (ui_out_is_mi_like_p (uiout)) | |
6935 | { | |
6936 | say_where = 0; | |
6937 | break; | |
6938 | } | |
6939 | printf_filtered (_("Fast tracepoint")); | |
6940 | printf_filtered (_(" %d"), b->number); | |
6941 | say_where = 1; | |
6942 | break; | |
0fb4aa4b PA |
6943 | case bp_static_tracepoint: |
6944 | if (ui_out_is_mi_like_p (uiout)) | |
6945 | { | |
6946 | say_where = 0; | |
6947 | break; | |
6948 | } | |
6949 | printf_filtered (_("Static tracepoint")); | |
6950 | printf_filtered (_(" %d"), b->number); | |
6951 | say_where = 1; | |
6952 | break; | |
3086aeae DJ |
6953 | |
6954 | case bp_until: | |
6955 | case bp_finish: | |
6956 | case bp_longjmp: | |
6957 | case bp_longjmp_resume: | |
186c406b TT |
6958 | case bp_exception: |
6959 | case bp_exception_resume: | |
3086aeae | 6960 | case bp_step_resume: |
3086aeae | 6961 | case bp_call_dummy: |
aa7d318d | 6962 | case bp_std_terminate: |
3086aeae DJ |
6963 | case bp_watchpoint_scope: |
6964 | case bp_shlib_event: | |
6965 | case bp_thread_event: | |
6966 | case bp_overlay_event: | |
4efc6507 | 6967 | case bp_jit_event: |
0fd8e87f | 6968 | case bp_longjmp_master: |
aa7d318d | 6969 | case bp_std_terminate_master: |
186c406b | 6970 | case bp_exception_master: |
3086aeae DJ |
6971 | break; |
6972 | } | |
c906108c | 6973 | |
c906108c SS |
6974 | if (say_where) |
6975 | { | |
a3f17187 AC |
6976 | /* i18n: cagney/2005-02-11: Below needs to be merged into a |
6977 | single string. */ | |
0d381245 | 6978 | if (b->loc == NULL) |
c906108c | 6979 | { |
a3f17187 | 6980 | printf_filtered (_(" (%s) pending."), b->addr_string); |
0101ce28 JJ |
6981 | } |
6982 | else | |
6983 | { | |
79a45b7d | 6984 | if (opts.addressprint || b->source_file == NULL) |
0101ce28 JJ |
6985 | { |
6986 | printf_filtered (" at "); | |
5af949e3 UW |
6987 | fputs_filtered (paddress (b->loc->gdbarch, b->loc->address), |
6988 | gdb_stdout); | |
0101ce28 JJ |
6989 | } |
6990 | if (b->source_file) | |
6991 | printf_filtered (": file %s, line %d.", | |
6992 | b->source_file, b->line_number); | |
0d381245 VP |
6993 | |
6994 | if (b->loc->next) | |
6995 | { | |
6996 | struct bp_location *loc = b->loc; | |
6997 | int n = 0; | |
6998 | for (; loc; loc = loc->next) | |
6999 | ++n; | |
7000 | printf_filtered (" (%d locations)", n); | |
7001 | } | |
7002 | ||
c906108c | 7003 | } |
c906108c | 7004 | } |
9dc5e2a9 | 7005 | if (ui_out_is_mi_like_p (uiout)) |
fb40c209 | 7006 | return; |
c906108c SS |
7007 | printf_filtered ("\n"); |
7008 | } | |
c906108c | 7009 | \f |
c5aa993b | 7010 | |
0d381245 | 7011 | static struct bp_location * |
39d61571 | 7012 | add_location_to_breakpoint (struct breakpoint *b, |
0d381245 VP |
7013 | const struct symtab_and_line *sal) |
7014 | { | |
7015 | struct bp_location *loc, **tmp; | |
7016 | ||
39d61571 | 7017 | loc = allocate_bp_location (b); |
0d381245 VP |
7018 | for (tmp = &(b->loc); *tmp != NULL; tmp = &((*tmp)->next)) |
7019 | ; | |
7020 | *tmp = loc; | |
a6d9a66e UW |
7021 | loc->gdbarch = get_sal_arch (*sal); |
7022 | if (!loc->gdbarch) | |
7023 | loc->gdbarch = b->gdbarch; | |
0d381245 | 7024 | loc->requested_address = sal->pc; |
a6d9a66e UW |
7025 | loc->address = adjust_breakpoint_address (loc->gdbarch, |
7026 | loc->requested_address, b->type); | |
6c95b8df PA |
7027 | loc->pspace = sal->pspace; |
7028 | gdb_assert (loc->pspace != NULL); | |
0d381245 VP |
7029 | loc->section = sal->section; |
7030 | ||
7031 | set_breakpoint_location_function (loc); | |
7032 | return loc; | |
7033 | } | |
514f746b AR |
7034 | \f |
7035 | ||
7036 | /* Return 1 if LOC is pointing to a permanent breakpoint, | |
7037 | return 0 otherwise. */ | |
7038 | ||
7039 | static int | |
7040 | bp_loc_is_permanent (struct bp_location *loc) | |
7041 | { | |
7042 | int len; | |
7043 | CORE_ADDR addr; | |
7044 | const gdb_byte *brk; | |
7045 | gdb_byte *target_mem; | |
939c61fa JK |
7046 | struct cleanup *cleanup; |
7047 | int retval = 0; | |
514f746b AR |
7048 | |
7049 | gdb_assert (loc != NULL); | |
7050 | ||
7051 | addr = loc->address; | |
a6d9a66e | 7052 | brk = gdbarch_breakpoint_from_pc (loc->gdbarch, &addr, &len); |
514f746b | 7053 | |
939c61fa JK |
7054 | /* Software breakpoints unsupported? */ |
7055 | if (brk == NULL) | |
7056 | return 0; | |
7057 | ||
514f746b AR |
7058 | target_mem = alloca (len); |
7059 | ||
939c61fa JK |
7060 | /* Enable the automatic memory restoration from breakpoints while |
7061 | we read the memory. Otherwise we could say about our temporary | |
7062 | breakpoints they are permanent. */ | |
6c95b8df PA |
7063 | cleanup = save_current_space_and_thread (); |
7064 | ||
7065 | switch_to_program_space_and_thread (loc->pspace); | |
7066 | make_show_memory_breakpoints_cleanup (0); | |
939c61fa | 7067 | |
514f746b AR |
7068 | if (target_read_memory (loc->address, target_mem, len) == 0 |
7069 | && memcmp (target_mem, brk, len) == 0) | |
939c61fa | 7070 | retval = 1; |
514f746b | 7071 | |
939c61fa JK |
7072 | do_cleanups (cleanup); |
7073 | ||
7074 | return retval; | |
514f746b AR |
7075 | } |
7076 | ||
7077 | ||
c3f6f71d | 7078 | |
018d34a4 VP |
7079 | /* Create a breakpoint with SAL as location. Use ADDR_STRING |
7080 | as textual description of the location, and COND_STRING | |
db107f19 | 7081 | as condition expression. */ |
018d34a4 VP |
7082 | |
7083 | static void | |
8cdf0e15 VP |
7084 | create_breakpoint_sal (struct gdbarch *gdbarch, |
7085 | struct symtabs_and_lines sals, char *addr_string, | |
7086 | char *cond_string, | |
7087 | enum bptype type, enum bpdisp disposition, | |
7088 | int thread, int task, int ignore_count, | |
84f4c1fe PM |
7089 | struct breakpoint_ops *ops, int from_tty, |
7090 | int enabled, int internal) | |
018d34a4 | 7091 | { |
0d381245 VP |
7092 | struct breakpoint *b = NULL; |
7093 | int i; | |
018d34a4 VP |
7094 | |
7095 | if (type == bp_hardware_breakpoint) | |
7096 | { | |
7097 | int i = hw_breakpoint_used_count (); | |
7098 | int target_resources_ok = | |
d92524f1 | 7099 | target_can_use_hardware_watchpoint (bp_hardware_breakpoint, |
018d34a4 VP |
7100 | i + 1, 0); |
7101 | if (target_resources_ok == 0) | |
7102 | error (_("No hardware breakpoint support in the target.")); | |
7103 | else if (target_resources_ok < 0) | |
7104 | error (_("Hardware breakpoints used exceeds limit.")); | |
7105 | } | |
7106 | ||
6c95b8df PA |
7107 | gdb_assert (sals.nelts > 0); |
7108 | ||
0d381245 VP |
7109 | for (i = 0; i < sals.nelts; ++i) |
7110 | { | |
7111 | struct symtab_and_line sal = sals.sals[i]; | |
7112 | struct bp_location *loc; | |
7113 | ||
7114 | if (from_tty) | |
5af949e3 UW |
7115 | { |
7116 | struct gdbarch *loc_gdbarch = get_sal_arch (sal); | |
7117 | if (!loc_gdbarch) | |
7118 | loc_gdbarch = gdbarch; | |
7119 | ||
7120 | describe_other_breakpoints (loc_gdbarch, | |
6c95b8df | 7121 | sal.pspace, sal.pc, sal.section, thread); |
5af949e3 | 7122 | } |
0d381245 VP |
7123 | |
7124 | if (i == 0) | |
7125 | { | |
a6d9a66e | 7126 | b = set_raw_breakpoint (gdbarch, sal, type); |
84f4c1fe | 7127 | set_breakpoint_number (internal, b); |
0d381245 | 7128 | b->thread = thread; |
4a306c9a | 7129 | b->task = task; |
018d34a4 | 7130 | |
0d381245 VP |
7131 | b->cond_string = cond_string; |
7132 | b->ignore_count = ignore_count; | |
41447f92 | 7133 | b->enable_state = enabled ? bp_enabled : bp_disabled; |
0d381245 | 7134 | b->disposition = disposition; |
6c95b8df PA |
7135 | b->pspace = sals.sals[0].pspace; |
7136 | ||
0fb4aa4b PA |
7137 | if (type == bp_static_tracepoint) |
7138 | { | |
7139 | struct static_tracepoint_marker marker; | |
7140 | ||
7141 | if (is_marker_spec (addr_string)) | |
7142 | { | |
7143 | /* We already know the marker exists, otherwise, we | |
7144 | wouldn't see a sal for it. */ | |
7145 | char *p = &addr_string[3]; | |
7146 | char *endp; | |
7147 | char *marker_str; | |
7148 | int i; | |
7149 | ||
7150 | while (*p == ' ' || *p == '\t') | |
7151 | p++; | |
7152 | ||
7153 | endp = p; | |
7154 | while (*endp != ' ' && *endp != '\t' && *endp != '\0') | |
7155 | endp++; | |
7156 | ||
7157 | marker_str = savestring (p, endp - p); | |
7158 | b->static_trace_marker_id = marker_str; | |
7159 | ||
3e43a32a MS |
7160 | printf_filtered (_("Probed static tracepoint " |
7161 | "marker \"%s\"\n"), | |
0fb4aa4b PA |
7162 | b->static_trace_marker_id); |
7163 | } | |
7164 | else if (target_static_tracepoint_marker_at (sal.pc, &marker)) | |
7165 | { | |
7166 | b->static_trace_marker_id = xstrdup (marker.str_id); | |
7167 | release_static_tracepoint_marker (&marker); | |
7168 | ||
3e43a32a MS |
7169 | printf_filtered (_("Probed static tracepoint " |
7170 | "marker \"%s\"\n"), | |
0fb4aa4b PA |
7171 | b->static_trace_marker_id); |
7172 | } | |
7173 | else | |
3e43a32a MS |
7174 | warning (_("Couldn't determine the static " |
7175 | "tracepoint marker to probe")); | |
0fb4aa4b PA |
7176 | } |
7177 | ||
6c95b8df | 7178 | if (enabled && b->pspace->executing_startup |
8bea4e01 UW |
7179 | && (b->type == bp_breakpoint |
7180 | || b->type == bp_hardware_breakpoint)) | |
7181 | b->enable_state = bp_startup_disabled; | |
7182 | ||
0d381245 VP |
7183 | loc = b->loc; |
7184 | } | |
7185 | else | |
018d34a4 | 7186 | { |
39d61571 | 7187 | loc = add_location_to_breakpoint (b, &sal); |
0d381245 VP |
7188 | } |
7189 | ||
514f746b AR |
7190 | if (bp_loc_is_permanent (loc)) |
7191 | make_breakpoint_permanent (b); | |
7192 | ||
0d381245 VP |
7193 | if (b->cond_string) |
7194 | { | |
7195 | char *arg = b->cond_string; | |
d32a6982 | 7196 | loc->cond = parse_exp_1 (&arg, block_for_pc (loc->address), 0); |
0d381245 | 7197 | if (*arg) |
db107f19 | 7198 | error (_("Garbage %s follows condition"), arg); |
018d34a4 | 7199 | } |
0d381245 | 7200 | } |
018d34a4 VP |
7201 | |
7202 | if (addr_string) | |
7203 | b->addr_string = addr_string; | |
7204 | else | |
7205 | /* addr_string has to be used or breakpoint_re_set will delete | |
7206 | me. */ | |
5af949e3 UW |
7207 | b->addr_string |
7208 | = xstrprintf ("*%s", paddress (b->loc->gdbarch, b->loc->address)); | |
018d34a4 | 7209 | |
604133b5 | 7210 | b->ops = ops; |
84f4c1fe PM |
7211 | if (internal) |
7212 | /* Do not mention breakpoints with a negative number, but do | |
7213 | notify observers. */ | |
7214 | observer_notify_breakpoint_created (b->number); | |
7215 | else | |
7216 | mention (b); | |
018d34a4 VP |
7217 | } |
7218 | ||
ed0616c6 VP |
7219 | /* Remove element at INDEX_TO_REMOVE from SAL, shifting other |
7220 | elements to fill the void space. */ | |
2c0b251b PA |
7221 | static void |
7222 | remove_sal (struct symtabs_and_lines *sal, int index_to_remove) | |
ed0616c6 VP |
7223 | { |
7224 | int i = index_to_remove+1; | |
7225 | int last_index = sal->nelts-1; | |
7226 | ||
7227 | for (;i <= last_index; ++i) | |
7228 | sal->sals[i-1] = sal->sals[i]; | |
7229 | ||
7230 | --(sal->nelts); | |
7231 | } | |
7232 | ||
6c95b8df PA |
7233 | /* If appropriate, obtains all sals that correspond to the same file |
7234 | and line as SAL, in all program spaces. Users debugging with IDEs, | |
7235 | will want to set a breakpoint at foo.c:line, and not really care | |
7236 | about program spaces. This is done only if SAL does not have | |
7237 | explicit PC and has line and file information. If we got just a | |
7238 | single expanded sal, return the original. | |
ed0616c6 | 7239 | |
6c95b8df PA |
7240 | Otherwise, if SAL.explicit_line is not set, filter out all sals for |
7241 | which the name of enclosing function is different from SAL. This | |
7242 | makes sure that if we have breakpoint originally set in template | |
7243 | instantiation, say foo<int>(), we won't expand SAL to locations at | |
7244 | the same line in all existing instantiations of 'foo'. */ | |
ed0616c6 | 7245 | |
2c0b251b | 7246 | static struct symtabs_and_lines |
ed0616c6 VP |
7247 | expand_line_sal_maybe (struct symtab_and_line sal) |
7248 | { | |
7249 | struct symtabs_and_lines expanded; | |
7250 | CORE_ADDR original_pc = sal.pc; | |
7251 | char *original_function = NULL; | |
7252 | int found; | |
7253 | int i; | |
6c95b8df | 7254 | struct cleanup *old_chain; |
ed0616c6 VP |
7255 | |
7256 | /* If we have explicit pc, don't expand. | |
7257 | If we have no line number, we can't expand. */ | |
7258 | if (sal.explicit_pc || sal.line == 0 || sal.symtab == NULL) | |
7259 | { | |
7260 | expanded.nelts = 1; | |
7261 | expanded.sals = xmalloc (sizeof (struct symtab_and_line)); | |
7262 | expanded.sals[0] = sal; | |
7263 | return expanded; | |
7264 | } | |
7265 | ||
7266 | sal.pc = 0; | |
6c95b8df PA |
7267 | |
7268 | old_chain = save_current_space_and_thread (); | |
7269 | ||
7270 | switch_to_program_space_and_thread (sal.pspace); | |
7271 | ||
ed0616c6 | 7272 | find_pc_partial_function (original_pc, &original_function, NULL, NULL); |
6c95b8df PA |
7273 | |
7274 | /* Note that expand_line_sal visits *all* program spaces. */ | |
ed0616c6 | 7275 | expanded = expand_line_sal (sal); |
6c95b8df | 7276 | |
ed0616c6 VP |
7277 | if (expanded.nelts == 1) |
7278 | { | |
3dba1c98 JB |
7279 | /* We had one sal, we got one sal. Return that sal, adjusting it |
7280 | past the function prologue if necessary. */ | |
ed0616c6 VP |
7281 | xfree (expanded.sals); |
7282 | expanded.nelts = 1; | |
7283 | expanded.sals = xmalloc (sizeof (struct symtab_and_line)); | |
7284 | sal.pc = original_pc; | |
7285 | expanded.sals[0] = sal; | |
3dba1c98 | 7286 | skip_prologue_sal (&expanded.sals[0]); |
6c95b8df | 7287 | do_cleanups (old_chain); |
ed0616c6 VP |
7288 | return expanded; |
7289 | } | |
7290 | ||
7291 | if (!sal.explicit_line) | |
7292 | { | |
7293 | CORE_ADDR func_addr, func_end; | |
7294 | for (i = 0; i < expanded.nelts; ++i) | |
7295 | { | |
7296 | CORE_ADDR pc = expanded.sals[i].pc; | |
7297 | char *this_function; | |
6c95b8df PA |
7298 | |
7299 | /* We need to switch threads as well since we're about to | |
7300 | read memory. */ | |
7301 | switch_to_program_space_and_thread (expanded.sals[i].pspace); | |
7302 | ||
ed0616c6 VP |
7303 | if (find_pc_partial_function (pc, &this_function, |
7304 | &func_addr, &func_end)) | |
7305 | { | |
059fb39f PM |
7306 | if (this_function |
7307 | && strcmp (this_function, original_function) != 0) | |
ed0616c6 VP |
7308 | { |
7309 | remove_sal (&expanded, i); | |
7310 | --i; | |
7311 | } | |
ed0616c6 VP |
7312 | } |
7313 | } | |
7314 | } | |
059acae7 UW |
7315 | |
7316 | /* Skip the function prologue if necessary. */ | |
7317 | for (i = 0; i < expanded.nelts; ++i) | |
7318 | skip_prologue_sal (&expanded.sals[i]); | |
ed0616c6 | 7319 | |
6c95b8df PA |
7320 | do_cleanups (old_chain); |
7321 | ||
ed0616c6 VP |
7322 | if (expanded.nelts <= 1) |
7323 | { | |
4a64f543 MS |
7324 | /* This is un ugly workaround. If we get zero expanded sals |
7325 | then something is really wrong. Fix that by returning the | |
7326 | original sal. */ | |
7327 | ||
ed0616c6 VP |
7328 | xfree (expanded.sals); |
7329 | expanded.nelts = 1; | |
7330 | expanded.sals = xmalloc (sizeof (struct symtab_and_line)); | |
7331 | sal.pc = original_pc; | |
7332 | expanded.sals[0] = sal; | |
7333 | return expanded; | |
7334 | } | |
7335 | ||
7336 | if (original_pc) | |
7337 | { | |
7338 | found = 0; | |
7339 | for (i = 0; i < expanded.nelts; ++i) | |
7340 | if (expanded.sals[i].pc == original_pc) | |
7341 | { | |
7342 | found = 1; | |
7343 | break; | |
7344 | } | |
7345 | gdb_assert (found); | |
7346 | } | |
7347 | ||
7348 | return expanded; | |
7349 | } | |
7350 | ||
018d34a4 VP |
7351 | /* Add SALS.nelts breakpoints to the breakpoint table. For each |
7352 | SALS.sal[i] breakpoint, include the corresponding ADDR_STRING[i] | |
7353 | value. COND_STRING, if not NULL, specified the condition to be | |
7354 | used for all breakpoints. Essentially the only case where | |
7355 | SALS.nelts is not 1 is when we set a breakpoint on an overloaded | |
7356 | function. In that case, it's still not possible to specify | |
7357 | separate conditions for different overloaded functions, so | |
7358 | we take just a single condition string. | |
7359 | ||
c3f6f71d | 7360 | NOTE: If the function succeeds, the caller is expected to cleanup |
018d34a4 | 7361 | the arrays ADDR_STRING, COND_STRING, and SALS (but not the |
c3f6f71d JM |
7362 | array contents). If the function fails (error() is called), the |
7363 | caller is expected to cleanups both the ADDR_STRING, COND_STRING, | |
4a64f543 | 7364 | COND and SALS arrays and each of those arrays contents. */ |
c906108c SS |
7365 | |
7366 | static void | |
8cdf0e15 VP |
7367 | create_breakpoints_sal (struct gdbarch *gdbarch, |
7368 | struct symtabs_and_lines sals, char **addr_string, | |
7369 | char *cond_string, | |
7370 | enum bptype type, enum bpdisp disposition, | |
7371 | int thread, int task, int ignore_count, | |
7372 | struct breakpoint_ops *ops, int from_tty, | |
84f4c1fe | 7373 | int enabled, int internal) |
c906108c | 7374 | { |
018d34a4 | 7375 | int i; |
cc59ec59 | 7376 | |
018d34a4 | 7377 | for (i = 0; i < sals.nelts; ++i) |
c3f6f71d | 7378 | { |
ed0616c6 VP |
7379 | struct symtabs_and_lines expanded = |
7380 | expand_line_sal_maybe (sals.sals[i]); | |
0d381245 | 7381 | |
8cdf0e15 VP |
7382 | create_breakpoint_sal (gdbarch, expanded, addr_string[i], |
7383 | cond_string, type, disposition, | |
84f4c1fe PM |
7384 | thread, task, ignore_count, ops, |
7385 | from_tty, enabled, internal); | |
c3f6f71d | 7386 | } |
c3f6f71d | 7387 | } |
c906108c | 7388 | |
c3f6f71d JM |
7389 | /* Parse ARG which is assumed to be a SAL specification possibly |
7390 | followed by conditionals. On return, SALS contains an array of SAL | |
4a64f543 MS |
7391 | addresses found. ADDR_STRING contains a vector of (canonical) |
7392 | address strings. ARG points to the end of the SAL. */ | |
c906108c | 7393 | |
b9362cc7 | 7394 | static void |
c3f6f71d JM |
7395 | parse_breakpoint_sals (char **address, |
7396 | struct symtabs_and_lines *sals, | |
0101ce28 JJ |
7397 | char ***addr_string, |
7398 | int *not_found_ptr) | |
c3f6f71d JM |
7399 | { |
7400 | char *addr_start = *address; | |
cc59ec59 | 7401 | |
c3f6f71d JM |
7402 | *addr_string = NULL; |
7403 | /* If no arg given, or if first arg is 'if ', use the default | |
4a64f543 | 7404 | breakpoint. */ |
c3f6f71d JM |
7405 | if ((*address) == NULL |
7406 | || (strncmp ((*address), "if", 2) == 0 && isspace ((*address)[2]))) | |
c906108c SS |
7407 | { |
7408 | if (default_breakpoint_valid) | |
7409 | { | |
c3f6f71d | 7410 | struct symtab_and_line sal; |
cc59ec59 | 7411 | |
4a64f543 | 7412 | init_sal (&sal); /* Initialize to zeroes. */ |
c3f6f71d | 7413 | sals->sals = (struct symtab_and_line *) |
c906108c SS |
7414 | xmalloc (sizeof (struct symtab_and_line)); |
7415 | sal.pc = default_breakpoint_address; | |
7416 | sal.line = default_breakpoint_line; | |
7417 | sal.symtab = default_breakpoint_symtab; | |
6c95b8df | 7418 | sal.pspace = default_breakpoint_pspace; |
c5aa993b | 7419 | sal.section = find_pc_overlay (sal.pc); |
00903456 | 7420 | |
4a64f543 MS |
7421 | /* "break" without arguments is equivalent to "break *PC" |
7422 | where PC is the default_breakpoint_address. So make sure | |
7423 | to set sal.explicit_pc to prevent GDB from trying to | |
7424 | expand the list of sals to include all other instances | |
7425 | with the same symtab and line. */ | |
00903456 JK |
7426 | sal.explicit_pc = 1; |
7427 | ||
c3f6f71d JM |
7428 | sals->sals[0] = sal; |
7429 | sals->nelts = 1; | |
c906108c SS |
7430 | } |
7431 | else | |
8a3fe4f8 | 7432 | error (_("No default breakpoint address now.")); |
c906108c SS |
7433 | } |
7434 | else | |
7435 | { | |
c906108c | 7436 | /* Force almost all breakpoints to be in terms of the |
4a64f543 MS |
7437 | current_source_symtab (which is decode_line_1's default). |
7438 | This should produce the results we want almost all of the | |
7439 | time while leaving default_breakpoint_* alone. | |
7440 | ||
1aeae86e AF |
7441 | ObjC: However, don't match an Objective-C method name which |
7442 | may have a '+' or '-' succeeded by a '[' */ | |
0378c332 | 7443 | |
c214a6fd | 7444 | struct symtab_and_line cursal = get_current_source_symtab_and_line (); |
0378c332 | 7445 | |
c906108c | 7446 | if (default_breakpoint_valid |
0378c332 | 7447 | && (!cursal.symtab |
1aeae86e AF |
7448 | || ((strchr ("+-", (*address)[0]) != NULL) |
7449 | && ((*address)[1] != '[')))) | |
c3f6f71d | 7450 | *sals = decode_line_1 (address, 1, default_breakpoint_symtab, |
0101ce28 JJ |
7451 | default_breakpoint_line, addr_string, |
7452 | not_found_ptr); | |
c906108c | 7453 | else |
0101ce28 JJ |
7454 | *sals = decode_line_1 (address, 1, (struct symtab *) NULL, 0, |
7455 | addr_string, not_found_ptr); | |
c906108c | 7456 | } |
4a64f543 | 7457 | /* For any SAL that didn't have a canonical string, fill one in. */ |
c3f6f71d JM |
7458 | if (sals->nelts > 0 && *addr_string == NULL) |
7459 | *addr_string = xcalloc (sals->nelts, sizeof (char **)); | |
7460 | if (addr_start != (*address)) | |
c906108c | 7461 | { |
c3f6f71d | 7462 | int i; |
cc59ec59 | 7463 | |
c3f6f71d | 7464 | for (i = 0; i < sals->nelts; i++) |
c906108c | 7465 | { |
4a64f543 | 7466 | /* Add the string if not present. */ |
c3f6f71d | 7467 | if ((*addr_string)[i] == NULL) |
cc59ec59 MS |
7468 | (*addr_string)[i] = savestring (addr_start, |
7469 | (*address) - addr_start); | |
c906108c SS |
7470 | } |
7471 | } | |
c3f6f71d | 7472 | } |
c906108c | 7473 | |
c906108c | 7474 | |
c3f6f71d | 7475 | /* Convert each SAL into a real PC. Verify that the PC can be |
4a64f543 | 7476 | inserted as a breakpoint. If it can't throw an error. */ |
c906108c | 7477 | |
b9362cc7 | 7478 | static void |
23e7acfb | 7479 | breakpoint_sals_to_pc (struct symtabs_and_lines *sals) |
c3f6f71d JM |
7480 | { |
7481 | int i; | |
cc59ec59 | 7482 | |
c3f6f71d | 7483 | for (i = 0; i < sals->nelts; i++) |
ee53e872 | 7484 | resolve_sal_pc (&sals->sals[i]); |
c3f6f71d JM |
7485 | } |
7486 | ||
7a697b8d SS |
7487 | /* Fast tracepoints may have restrictions on valid locations. For |
7488 | instance, a fast tracepoint using a jump instead of a trap will | |
7489 | likely have to overwrite more bytes than a trap would, and so can | |
7490 | only be placed where the instruction is longer than the jump, or a | |
7491 | multi-instruction sequence does not have a jump into the middle of | |
7492 | it, etc. */ | |
7493 | ||
7494 | static void | |
7495 | check_fast_tracepoint_sals (struct gdbarch *gdbarch, | |
7496 | struct symtabs_and_lines *sals) | |
7497 | { | |
7498 | int i, rslt; | |
7499 | struct symtab_and_line *sal; | |
7500 | char *msg; | |
7501 | struct cleanup *old_chain; | |
7502 | ||
7503 | for (i = 0; i < sals->nelts; i++) | |
7504 | { | |
7505 | sal = &sals->sals[i]; | |
7506 | ||
7507 | rslt = gdbarch_fast_tracepoint_valid_at (gdbarch, sal->pc, | |
7508 | NULL, &msg); | |
7509 | old_chain = make_cleanup (xfree, msg); | |
7510 | ||
7511 | if (!rslt) | |
7512 | error (_("May not have a fast tracepoint at 0x%s%s"), | |
7513 | paddress (gdbarch, sal->pc), (msg ? msg : "")); | |
7514 | ||
7515 | do_cleanups (old_chain); | |
7516 | } | |
7517 | } | |
7518 | ||
05ff989b | 7519 | static void |
0101ce28 JJ |
7520 | do_captured_parse_breakpoint (struct ui_out *ui, void *data) |
7521 | { | |
7522 | struct captured_parse_breakpoint_args *args = data; | |
7523 | ||
7524 | parse_breakpoint_sals (args->arg_p, args->sals_p, args->addr_string_p, | |
7525 | args->not_found_ptr); | |
0101ce28 JJ |
7526 | } |
7527 | ||
018d34a4 VP |
7528 | /* Given TOK, a string specification of condition and thread, as |
7529 | accepted by the 'break' command, extract the condition | |
7530 | string and thread number and set *COND_STRING and *THREAD. | |
4a64f543 | 7531 | PC identifies the context at which the condition should be parsed. |
018d34a4 VP |
7532 | If no condition is found, *COND_STRING is set to NULL. |
7533 | If no thread is found, *THREAD is set to -1. */ | |
7534 | static void | |
7535 | find_condition_and_thread (char *tok, CORE_ADDR pc, | |
4a306c9a | 7536 | char **cond_string, int *thread, int *task) |
018d34a4 VP |
7537 | { |
7538 | *cond_string = NULL; | |
7539 | *thread = -1; | |
7540 | while (tok && *tok) | |
7541 | { | |
7542 | char *end_tok; | |
7543 | int toklen; | |
7544 | char *cond_start = NULL; | |
7545 | char *cond_end = NULL; | |
cc59ec59 | 7546 | |
018d34a4 VP |
7547 | while (*tok == ' ' || *tok == '\t') |
7548 | tok++; | |
7549 | ||
7550 | end_tok = tok; | |
7551 | ||
7552 | while (*end_tok != ' ' && *end_tok != '\t' && *end_tok != '\000') | |
7553 | end_tok++; | |
7554 | ||
7555 | toklen = end_tok - tok; | |
7556 | ||
7557 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) | |
7558 | { | |
f7545552 TT |
7559 | struct expression *expr; |
7560 | ||
018d34a4 | 7561 | tok = cond_start = end_tok + 1; |
f7545552 TT |
7562 | expr = parse_exp_1 (&tok, block_for_pc (pc), 0); |
7563 | xfree (expr); | |
018d34a4 VP |
7564 | cond_end = tok; |
7565 | *cond_string = savestring (cond_start, | |
7566 | cond_end - cond_start); | |
7567 | } | |
7568 | else if (toklen >= 1 && strncmp (tok, "thread", toklen) == 0) | |
7569 | { | |
7570 | char *tmptok; | |
7571 | ||
7572 | tok = end_tok + 1; | |
7573 | tmptok = tok; | |
7574 | *thread = strtol (tok, &tok, 0); | |
7575 | if (tok == tmptok) | |
7576 | error (_("Junk after thread keyword.")); | |
7577 | if (!valid_thread_id (*thread)) | |
7578 | error (_("Unknown thread %d."), *thread); | |
7579 | } | |
4a306c9a JB |
7580 | else if (toklen >= 1 && strncmp (tok, "task", toklen) == 0) |
7581 | { | |
7582 | char *tmptok; | |
7583 | ||
7584 | tok = end_tok + 1; | |
7585 | tmptok = tok; | |
7586 | *task = strtol (tok, &tok, 0); | |
7587 | if (tok == tmptok) | |
7588 | error (_("Junk after task keyword.")); | |
7589 | if (!valid_task_id (*task)) | |
b6199126 | 7590 | error (_("Unknown task %d."), *task); |
4a306c9a | 7591 | } |
018d34a4 VP |
7592 | else |
7593 | error (_("Junk at end of arguments.")); | |
7594 | } | |
7595 | } | |
7596 | ||
0fb4aa4b PA |
7597 | /* Decode a static tracepoint marker spec. */ |
7598 | ||
7599 | static struct symtabs_and_lines | |
7600 | decode_static_tracepoint_spec (char **arg_p) | |
7601 | { | |
7602 | VEC(static_tracepoint_marker_p) *markers = NULL; | |
7603 | struct symtabs_and_lines sals; | |
7604 | struct symtab_and_line sal; | |
7605 | struct symbol *sym; | |
7606 | struct cleanup *old_chain; | |
7607 | char *p = &(*arg_p)[3]; | |
7608 | char *endp; | |
7609 | char *marker_str; | |
7610 | int i; | |
7611 | ||
7612 | while (*p == ' ' || *p == '\t') | |
7613 | p++; | |
7614 | ||
7615 | endp = p; | |
7616 | while (*endp != ' ' && *endp != '\t' && *endp != '\0') | |
7617 | endp++; | |
7618 | ||
7619 | marker_str = savestring (p, endp - p); | |
7620 | old_chain = make_cleanup (xfree, marker_str); | |
7621 | ||
7622 | markers = target_static_tracepoint_markers_by_strid (marker_str); | |
7623 | if (VEC_empty(static_tracepoint_marker_p, markers)) | |
7624 | error (_("No known static tracepoint marker named %s"), marker_str); | |
7625 | ||
7626 | sals.nelts = VEC_length(static_tracepoint_marker_p, markers); | |
7627 | sals.sals = xmalloc (sizeof *sals.sals * sals.nelts); | |
7628 | ||
7629 | for (i = 0; i < sals.nelts; i++) | |
7630 | { | |
7631 | struct static_tracepoint_marker *marker; | |
7632 | ||
7633 | marker = VEC_index (static_tracepoint_marker_p, markers, i); | |
7634 | ||
7635 | init_sal (&sals.sals[i]); | |
7636 | ||
7637 | sals.sals[i] = find_pc_line (marker->address, 0); | |
7638 | sals.sals[i].pc = marker->address; | |
7639 | ||
7640 | release_static_tracepoint_marker (marker); | |
7641 | } | |
7642 | ||
7643 | do_cleanups (old_chain); | |
7644 | ||
7645 | *arg_p = endp; | |
7646 | return sals; | |
7647 | } | |
7648 | ||
fd9b8c24 PA |
7649 | /* Set a breakpoint. This function is shared between CLI and MI |
7650 | functions for setting a breakpoint. This function has two major | |
7651 | modes of operations, selected by the PARSE_CONDITION_AND_THREAD | |
7652 | parameter. If non-zero, the function will parse arg, extracting | |
4a64f543 MS |
7653 | breakpoint location, address and thread. Otherwise, ARG is just |
7654 | the location of breakpoint, with condition and thread specified by | |
7655 | the COND_STRING and THREAD parameters. If INTERNAL is non-zero, | |
7656 | the breakpoint number will be allocated from the internal | |
7657 | breakpoint count. Returns true if any breakpoint was created; | |
7658 | false otherwise. */ | |
0101ce28 | 7659 | |
8cdf0e15 VP |
7660 | int |
7661 | create_breakpoint (struct gdbarch *gdbarch, | |
7662 | char *arg, char *cond_string, int thread, | |
7663 | int parse_condition_and_thread, | |
0fb4aa4b | 7664 | int tempflag, enum bptype type_wanted, |
8cdf0e15 VP |
7665 | int ignore_count, |
7666 | enum auto_boolean pending_break_support, | |
7667 | struct breakpoint_ops *ops, | |
84f4c1fe | 7668 | int from_tty, int enabled, int internal) |
c3f6f71d | 7669 | { |
71fff37b | 7670 | struct gdb_exception e; |
c3f6f71d | 7671 | struct symtabs_and_lines sals; |
0101ce28 | 7672 | struct symtab_and_line pending_sal; |
0101ce28 | 7673 | char *copy_arg; |
c3f6f71d JM |
7674 | char *addr_start = arg; |
7675 | char **addr_string; | |
7676 | struct cleanup *old_chain; | |
80c99de1 | 7677 | struct cleanup *bkpt_chain = NULL; |
0101ce28 | 7678 | struct captured_parse_breakpoint_args parse_args; |
05ff989b | 7679 | int i; |
0101ce28 | 7680 | int pending = 0; |
0101ce28 | 7681 | int not_found = 0; |
4a306c9a | 7682 | int task = 0; |
86b17b60 | 7683 | int prev_bkpt_count = breakpoint_count; |
c3f6f71d | 7684 | |
c3f6f71d JM |
7685 | sals.sals = NULL; |
7686 | sals.nelts = 0; | |
7687 | addr_string = NULL; | |
c3f6f71d | 7688 | |
0101ce28 JJ |
7689 | parse_args.arg_p = &arg; |
7690 | parse_args.sals_p = &sals; | |
7691 | parse_args.addr_string_p = &addr_string; | |
7692 | parse_args.not_found_ptr = ¬_found; | |
7693 | ||
0fb4aa4b PA |
7694 | if (type_wanted == bp_static_tracepoint && is_marker_spec (arg)) |
7695 | { | |
7696 | int i; | |
7697 | ||
7698 | sals = decode_static_tracepoint_spec (&arg); | |
7699 | ||
7700 | copy_arg = savestring (addr_start, arg - addr_start); | |
7701 | addr_string = xcalloc (sals.nelts, sizeof (char **)); | |
7702 | for (i = 0; i < sals.nelts; i++) | |
7703 | addr_string[i] = xstrdup (copy_arg); | |
7704 | goto done; | |
7705 | } | |
7706 | ||
05ff989b AC |
7707 | e = catch_exception (uiout, do_captured_parse_breakpoint, |
7708 | &parse_args, RETURN_MASK_ALL); | |
0101ce28 JJ |
7709 | |
7710 | /* If caller is interested in rc value from parse, set value. */ | |
05ff989b | 7711 | switch (e.reason) |
0101ce28 | 7712 | { |
05ff989b | 7713 | case RETURN_QUIT: |
98deb0da | 7714 | throw_exception (e); |
05ff989b AC |
7715 | case RETURN_ERROR: |
7716 | switch (e.error) | |
0101ce28 | 7717 | { |
05ff989b | 7718 | case NOT_FOUND_ERROR: |
0101ce28 | 7719 | |
05ff989b AC |
7720 | /* If pending breakpoint support is turned off, throw |
7721 | error. */ | |
fa8d40ab JJ |
7722 | |
7723 | if (pending_break_support == AUTO_BOOLEAN_FALSE) | |
723a2275 VP |
7724 | throw_exception (e); |
7725 | ||
7726 | exception_print (gdb_stderr, e); | |
fa8d40ab | 7727 | |
05ff989b AC |
7728 | /* If pending breakpoint support is auto query and the user |
7729 | selects no, then simply return the error code. */ | |
059fb39f | 7730 | if (pending_break_support == AUTO_BOOLEAN_AUTO |
3e43a32a MS |
7731 | && !nquery (_("Make breakpoint pending on " |
7732 | "future shared library load? "))) | |
fd9b8c24 | 7733 | return 0; |
fa8d40ab | 7734 | |
05ff989b AC |
7735 | /* At this point, either the user was queried about setting |
7736 | a pending breakpoint and selected yes, or pending | |
7737 | breakpoint behavior is on and thus a pending breakpoint | |
7738 | is defaulted on behalf of the user. */ | |
0101ce28 JJ |
7739 | copy_arg = xstrdup (addr_start); |
7740 | addr_string = ©_arg; | |
7741 | sals.nelts = 1; | |
7742 | sals.sals = &pending_sal; | |
7743 | pending_sal.pc = 0; | |
7744 | pending = 1; | |
05ff989b AC |
7745 | break; |
7746 | default: | |
98deb0da | 7747 | throw_exception (e); |
0101ce28 | 7748 | } |
05ff989b AC |
7749 | default: |
7750 | if (!sals.nelts) | |
fd9b8c24 | 7751 | return 0; |
0101ce28 | 7752 | } |
c3f6f71d | 7753 | |
0fb4aa4b PA |
7754 | done: |
7755 | ||
4a64f543 | 7756 | /* Create a chain of things that always need to be cleaned up. */ |
c3f6f71d JM |
7757 | old_chain = make_cleanup (null_cleanup, 0); |
7758 | ||
0101ce28 JJ |
7759 | if (!pending) |
7760 | { | |
7761 | /* Make sure that all storage allocated to SALS gets freed. */ | |
7762 | make_cleanup (xfree, sals.sals); | |
7763 | ||
4a64f543 | 7764 | /* Cleanup the addr_string array but not its contents. */ |
0101ce28 JJ |
7765 | make_cleanup (xfree, addr_string); |
7766 | } | |
c3f6f71d | 7767 | |
c3f6f71d JM |
7768 | /* ----------------------------- SNIP ----------------------------- |
7769 | Anything added to the cleanup chain beyond this point is assumed | |
7770 | to be part of a breakpoint. If the breakpoint create succeeds | |
80c99de1 PA |
7771 | then the memory is not reclaimed. */ |
7772 | bkpt_chain = make_cleanup (null_cleanup, 0); | |
c3f6f71d JM |
7773 | |
7774 | /* Mark the contents of the addr_string for cleanup. These go on | |
80c99de1 | 7775 | the bkpt_chain and only occur if the breakpoint create fails. */ |
c3f6f71d JM |
7776 | for (i = 0; i < sals.nelts; i++) |
7777 | { | |
7778 | if (addr_string[i] != NULL) | |
b8c9b27d | 7779 | make_cleanup (xfree, addr_string[i]); |
c3f6f71d JM |
7780 | } |
7781 | ||
7782 | /* Resolve all line numbers to PC's and verify that the addresses | |
7783 | are ok for the target. */ | |
0101ce28 | 7784 | if (!pending) |
23e7acfb | 7785 | breakpoint_sals_to_pc (&sals); |
c3f6f71d | 7786 | |
7a697b8d SS |
7787 | /* Fast tracepoints may have additional restrictions on location. */ |
7788 | if (type_wanted == bp_fast_tracepoint) | |
7789 | check_fast_tracepoint_sals (gdbarch, &sals); | |
7790 | ||
c3f6f71d JM |
7791 | /* Verify that condition can be parsed, before setting any |
7792 | breakpoints. Allocate a separate condition expression for each | |
4a64f543 | 7793 | breakpoint. */ |
0101ce28 | 7794 | if (!pending) |
c3f6f71d | 7795 | { |
2f069f6f | 7796 | if (parse_condition_and_thread) |
72b2ff0e VP |
7797 | { |
7798 | /* Here we only parse 'arg' to separate condition | |
7799 | from thread number, so parsing in context of first | |
7800 | sal is OK. When setting the breakpoint we'll | |
7801 | re-parse it in context of each sal. */ | |
7802 | cond_string = NULL; | |
7803 | thread = -1; | |
4a306c9a JB |
7804 | find_condition_and_thread (arg, sals.sals[0].pc, &cond_string, |
7805 | &thread, &task); | |
72b2ff0e VP |
7806 | if (cond_string) |
7807 | make_cleanup (xfree, cond_string); | |
7808 | } | |
2f069f6f | 7809 | else |
72b2ff0e VP |
7810 | { |
7811 | /* Create a private copy of condition string. */ | |
7812 | if (cond_string) | |
7813 | { | |
7814 | cond_string = xstrdup (cond_string); | |
7815 | make_cleanup (xfree, cond_string); | |
7816 | } | |
7817 | } | |
0fb4aa4b PA |
7818 | |
7819 | /* If the user is creating a static tracepoint by marker id | |
7820 | (strace -m MARKER_ID), then store the sals index, so that | |
7821 | breakpoint_re_set can try to match up which of the newly | |
7822 | found markers corresponds to this one, and, don't try to | |
7823 | expand multiple locations for each sal, given than SALS | |
7824 | already should contain all sals for MARKER_ID. */ | |
7825 | if (type_wanted == bp_static_tracepoint | |
7826 | && is_marker_spec (addr_string[0])) | |
7827 | { | |
7828 | int i; | |
7829 | ||
7830 | for (i = 0; i < sals.nelts; ++i) | |
7831 | { | |
7832 | struct symtabs_and_lines expanded; | |
7833 | struct breakpoint *tp; | |
7834 | struct cleanup *old_chain; | |
7835 | ||
7836 | expanded.nelts = 1; | |
7837 | expanded.sals = xmalloc (sizeof (struct symtab_and_line)); | |
7838 | expanded.sals[0] = sals.sals[i]; | |
7839 | old_chain = make_cleanup (xfree, expanded.sals); | |
7840 | ||
7841 | create_breakpoint_sal (gdbarch, expanded, addr_string[i], | |
7842 | cond_string, type_wanted, | |
7843 | tempflag ? disp_del : disp_donttouch, | |
7844 | thread, task, ignore_count, ops, | |
84f4c1fe | 7845 | from_tty, enabled, internal); |
0fb4aa4b PA |
7846 | |
7847 | do_cleanups (old_chain); | |
7848 | ||
7849 | /* Get the tracepoint we just created. */ | |
84f4c1fe PM |
7850 | if (internal) |
7851 | tp = get_breakpoint (internal_breakpoint_number); | |
7852 | else | |
7853 | tp = get_breakpoint (breakpoint_count); | |
0fb4aa4b PA |
7854 | gdb_assert (tp != NULL); |
7855 | ||
7856 | /* Given that its possible to have multiple markers with | |
7857 | the same string id, if the user is creating a static | |
7858 | tracepoint by marker id ("strace -m MARKER_ID"), then | |
7859 | store the sals index, so that breakpoint_re_set can | |
7860 | try to match up which of the newly found markers | |
7861 | corresponds to this one */ | |
7862 | tp->static_trace_marker_id_idx = i; | |
7863 | } | |
7864 | } | |
7865 | else | |
7866 | create_breakpoints_sal (gdbarch, sals, addr_string, cond_string, | |
3e43a32a MS |
7867 | type_wanted, |
7868 | tempflag ? disp_del : disp_donttouch, | |
0fb4aa4b | 7869 | thread, task, ignore_count, ops, from_tty, |
84f4c1fe | 7870 | enabled, internal); |
c906108c | 7871 | } |
0101ce28 JJ |
7872 | else |
7873 | { | |
0101ce28 JJ |
7874 | struct breakpoint *b; |
7875 | ||
0101ce28 JJ |
7876 | make_cleanup (xfree, copy_arg); |
7877 | ||
a6d9a66e | 7878 | b = set_raw_breakpoint_without_location (gdbarch, type_wanted); |
84f4c1fe | 7879 | set_breakpoint_number (internal, b); |
72b2ff0e | 7880 | b->thread = -1; |
018d34a4 | 7881 | b->addr_string = addr_string[0]; |
72b2ff0e | 7882 | b->cond_string = NULL; |
0101ce28 | 7883 | b->ignore_count = ignore_count; |
0101ce28 | 7884 | b->disposition = tempflag ? disp_del : disp_donttouch; |
0d381245 | 7885 | b->condition_not_parsed = 1; |
604133b5 | 7886 | b->ops = ops; |
41447f92 | 7887 | b->enable_state = enabled ? bp_enabled : bp_disabled; |
6c95b8df | 7888 | b->pspace = current_program_space; |
84f4c1fe | 7889 | b->py_bp_object = NULL; |
74960c60 | 7890 | |
6c95b8df | 7891 | if (enabled && b->pspace->executing_startup |
8bea4e01 UW |
7892 | && (b->type == bp_breakpoint |
7893 | || b->type == bp_hardware_breakpoint)) | |
7894 | b->enable_state = bp_startup_disabled; | |
7895 | ||
84f4c1fe PM |
7896 | if (internal) |
7897 | /* Do not mention breakpoints with a negative number, | |
7898 | but do notify observers. */ | |
7899 | observer_notify_breakpoint_created (b->number); | |
7900 | else | |
7901 | mention (b); | |
0101ce28 JJ |
7902 | } |
7903 | ||
c3f6f71d | 7904 | if (sals.nelts > 1) |
95a42b64 | 7905 | { |
3e43a32a MS |
7906 | warning (_("Multiple breakpoints were set.\nUse the " |
7907 | "\"delete\" command to delete unwanted breakpoints.")); | |
86b17b60 | 7908 | prev_breakpoint_count = prev_bkpt_count; |
95a42b64 TT |
7909 | } |
7910 | ||
80c99de1 PA |
7911 | /* That's it. Discard the cleanups for data inserted into the |
7912 | breakpoint. */ | |
7913 | discard_cleanups (bkpt_chain); | |
7914 | /* But cleanup everything else. */ | |
c3f6f71d | 7915 | do_cleanups (old_chain); |
217dc9e2 | 7916 | |
80c99de1 | 7917 | /* error call may happen here - have BKPT_CHAIN already discarded. */ |
217dc9e2 | 7918 | update_global_location_list (1); |
fd9b8c24 PA |
7919 | |
7920 | return 1; | |
c3f6f71d | 7921 | } |
c906108c | 7922 | |
72b2ff0e VP |
7923 | /* Set a breakpoint. |
7924 | ARG is a string describing breakpoint address, | |
7925 | condition, and thread. | |
7926 | FLAG specifies if a breakpoint is hardware on, | |
7927 | and if breakpoint is temporary, using BP_HARDWARE_FLAG | |
7928 | and BP_TEMPFLAG. */ | |
7929 | ||
98deb0da | 7930 | static void |
72b2ff0e | 7931 | break_command_1 (char *arg, int flag, int from_tty) |
c3f6f71d | 7932 | { |
72b2ff0e | 7933 | int tempflag = flag & BP_TEMPFLAG; |
0fb4aa4b PA |
7934 | enum bptype type_wanted = (flag & BP_HARDWAREFLAG |
7935 | ? bp_hardware_breakpoint | |
7936 | : bp_breakpoint); | |
c3f6f71d | 7937 | |
8cdf0e15 VP |
7938 | create_breakpoint (get_current_arch (), |
7939 | arg, | |
7940 | NULL, 0, 1 /* parse arg */, | |
0fb4aa4b | 7941 | tempflag, type_wanted, |
8cdf0e15 VP |
7942 | 0 /* Ignore count */, |
7943 | pending_break_support, | |
7944 | NULL /* breakpoint_ops */, | |
7945 | from_tty, | |
84f4c1fe PM |
7946 | 1 /* enabled */, |
7947 | 0 /* internal */); | |
c906108c SS |
7948 | } |
7949 | ||
72b2ff0e | 7950 | |
c906108c SS |
7951 | /* Helper function for break_command_1 and disassemble_command. */ |
7952 | ||
7953 | void | |
fba45db2 | 7954 | resolve_sal_pc (struct symtab_and_line *sal) |
c906108c SS |
7955 | { |
7956 | CORE_ADDR pc; | |
7957 | ||
7958 | if (sal->pc == 0 && sal->symtab != NULL) | |
7959 | { | |
7960 | if (!find_line_pc (sal->symtab, sal->line, &pc)) | |
8a3fe4f8 | 7961 | error (_("No line %d in file \"%s\"."), |
c906108c SS |
7962 | sal->line, sal->symtab->filename); |
7963 | sal->pc = pc; | |
6a048695 | 7964 | |
4a64f543 MS |
7965 | /* If this SAL corresponds to a breakpoint inserted using a line |
7966 | number, then skip the function prologue if necessary. */ | |
6a048695 | 7967 | if (sal->explicit_line) |
059acae7 | 7968 | skip_prologue_sal (sal); |
c906108c SS |
7969 | } |
7970 | ||
7971 | if (sal->section == 0 && sal->symtab != NULL) | |
7972 | { | |
7973 | struct blockvector *bv; | |
c5aa993b JM |
7974 | struct block *b; |
7975 | struct symbol *sym; | |
c906108c | 7976 | |
801e3a5b | 7977 | bv = blockvector_for_pc_sect (sal->pc, 0, &b, sal->symtab); |
c906108c SS |
7978 | if (bv != NULL) |
7979 | { | |
7f0df278 | 7980 | sym = block_linkage_function (b); |
c906108c SS |
7981 | if (sym != NULL) |
7982 | { | |
7983 | fixup_symbol_section (sym, sal->symtab->objfile); | |
714835d5 | 7984 | sal->section = SYMBOL_OBJ_SECTION (sym); |
c906108c SS |
7985 | } |
7986 | else | |
7987 | { | |
4a64f543 MS |
7988 | /* It really is worthwhile to have the section, so we'll |
7989 | just have to look harder. This case can be executed | |
7990 | if we have line numbers but no functions (as can | |
7991 | happen in assembly source). */ | |
c906108c | 7992 | |
c5aa993b | 7993 | struct minimal_symbol *msym; |
6c95b8df PA |
7994 | struct cleanup *old_chain = save_current_space_and_thread (); |
7995 | ||
7996 | switch_to_program_space_and_thread (sal->pspace); | |
c906108c SS |
7997 | |
7998 | msym = lookup_minimal_symbol_by_pc (sal->pc); | |
7999 | if (msym) | |
714835d5 | 8000 | sal->section = SYMBOL_OBJ_SECTION (msym); |
6c95b8df PA |
8001 | |
8002 | do_cleanups (old_chain); | |
c906108c SS |
8003 | } |
8004 | } | |
8005 | } | |
8006 | } | |
8007 | ||
8008 | void | |
fba45db2 | 8009 | break_command (char *arg, int from_tty) |
c906108c | 8010 | { |
db107f19 | 8011 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
8012 | } |
8013 | ||
c906108c | 8014 | void |
fba45db2 | 8015 | tbreak_command (char *arg, int from_tty) |
c906108c | 8016 | { |
db107f19 | 8017 | break_command_1 (arg, BP_TEMPFLAG, from_tty); |
c906108c SS |
8018 | } |
8019 | ||
c906108c | 8020 | static void |
fba45db2 | 8021 | hbreak_command (char *arg, int from_tty) |
c906108c | 8022 | { |
db107f19 | 8023 | break_command_1 (arg, BP_HARDWAREFLAG, from_tty); |
c906108c SS |
8024 | } |
8025 | ||
8026 | static void | |
fba45db2 | 8027 | thbreak_command (char *arg, int from_tty) |
c906108c | 8028 | { |
db107f19 | 8029 | break_command_1 (arg, (BP_TEMPFLAG | BP_HARDWAREFLAG), from_tty); |
c906108c SS |
8030 | } |
8031 | ||
8032 | static void | |
fba45db2 | 8033 | stop_command (char *arg, int from_tty) |
c906108c | 8034 | { |
a3f17187 | 8035 | printf_filtered (_("Specify the type of breakpoint to set.\n\ |
c906108c | 8036 | Usage: stop in <function | address>\n\ |
a3f17187 | 8037 | stop at <line>\n")); |
c906108c SS |
8038 | } |
8039 | ||
8040 | static void | |
fba45db2 | 8041 | stopin_command (char *arg, int from_tty) |
c906108c SS |
8042 | { |
8043 | int badInput = 0; | |
8044 | ||
c5aa993b | 8045 | if (arg == (char *) NULL) |
c906108c SS |
8046 | badInput = 1; |
8047 | else if (*arg != '*') | |
8048 | { | |
8049 | char *argptr = arg; | |
8050 | int hasColon = 0; | |
8051 | ||
4a64f543 | 8052 | /* Look for a ':'. If this is a line number specification, then |
53a5351d | 8053 | say it is bad, otherwise, it should be an address or |
4a64f543 | 8054 | function/method name. */ |
c906108c | 8055 | while (*argptr && !hasColon) |
c5aa993b JM |
8056 | { |
8057 | hasColon = (*argptr == ':'); | |
8058 | argptr++; | |
8059 | } | |
c906108c SS |
8060 | |
8061 | if (hasColon) | |
c5aa993b | 8062 | badInput = (*argptr != ':'); /* Not a class::method */ |
c906108c | 8063 | else |
c5aa993b | 8064 | badInput = isdigit (*arg); /* a simple line number */ |
c906108c SS |
8065 | } |
8066 | ||
8067 | if (badInput) | |
a3f17187 | 8068 | printf_filtered (_("Usage: stop in <function | address>\n")); |
c906108c | 8069 | else |
db107f19 | 8070 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
8071 | } |
8072 | ||
8073 | static void | |
fba45db2 | 8074 | stopat_command (char *arg, int from_tty) |
c906108c SS |
8075 | { |
8076 | int badInput = 0; | |
8077 | ||
c5aa993b | 8078 | if (arg == (char *) NULL || *arg == '*') /* no line number */ |
c906108c SS |
8079 | badInput = 1; |
8080 | else | |
8081 | { | |
8082 | char *argptr = arg; | |
8083 | int hasColon = 0; | |
8084 | ||
4a64f543 MS |
8085 | /* Look for a ':'. If there is a '::' then get out, otherwise |
8086 | it is probably a line number. */ | |
c906108c | 8087 | while (*argptr && !hasColon) |
c5aa993b JM |
8088 | { |
8089 | hasColon = (*argptr == ':'); | |
8090 | argptr++; | |
8091 | } | |
c906108c SS |
8092 | |
8093 | if (hasColon) | |
c5aa993b | 8094 | badInput = (*argptr == ':'); /* we have class::method */ |
c906108c | 8095 | else |
c5aa993b | 8096 | badInput = !isdigit (*arg); /* not a line number */ |
c906108c SS |
8097 | } |
8098 | ||
8099 | if (badInput) | |
a3f17187 | 8100 | printf_filtered (_("Usage: stop at <line>\n")); |
c906108c | 8101 | else |
db107f19 | 8102 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
8103 | } |
8104 | ||
4a64f543 MS |
8105 | /* Return non-zero if EXP is verified as constant. Returned zero |
8106 | means EXP is variable. Also the constant detection may fail for | |
8107 | some constant expressions and in such case still falsely return | |
8108 | zero. */ | |
65d79d4b SDJ |
8109 | static int |
8110 | watchpoint_exp_is_const (const struct expression *exp) | |
8111 | { | |
8112 | int i = exp->nelts; | |
8113 | ||
8114 | while (i > 0) | |
8115 | { | |
8116 | int oplenp, argsp; | |
8117 | ||
8118 | /* We are only interested in the descriptor of each element. */ | |
8119 | operator_length (exp, i, &oplenp, &argsp); | |
8120 | i -= oplenp; | |
8121 | ||
8122 | switch (exp->elts[i].opcode) | |
8123 | { | |
8124 | case BINOP_ADD: | |
8125 | case BINOP_SUB: | |
8126 | case BINOP_MUL: | |
8127 | case BINOP_DIV: | |
8128 | case BINOP_REM: | |
8129 | case BINOP_MOD: | |
8130 | case BINOP_LSH: | |
8131 | case BINOP_RSH: | |
8132 | case BINOP_LOGICAL_AND: | |
8133 | case BINOP_LOGICAL_OR: | |
8134 | case BINOP_BITWISE_AND: | |
8135 | case BINOP_BITWISE_IOR: | |
8136 | case BINOP_BITWISE_XOR: | |
8137 | case BINOP_EQUAL: | |
8138 | case BINOP_NOTEQUAL: | |
8139 | case BINOP_LESS: | |
8140 | case BINOP_GTR: | |
8141 | case BINOP_LEQ: | |
8142 | case BINOP_GEQ: | |
8143 | case BINOP_REPEAT: | |
8144 | case BINOP_COMMA: | |
8145 | case BINOP_EXP: | |
8146 | case BINOP_MIN: | |
8147 | case BINOP_MAX: | |
8148 | case BINOP_INTDIV: | |
8149 | case BINOP_CONCAT: | |
8150 | case BINOP_IN: | |
8151 | case BINOP_RANGE: | |
8152 | case TERNOP_COND: | |
8153 | case TERNOP_SLICE: | |
8154 | case TERNOP_SLICE_COUNT: | |
8155 | ||
8156 | case OP_LONG: | |
8157 | case OP_DOUBLE: | |
8158 | case OP_DECFLOAT: | |
8159 | case OP_LAST: | |
8160 | case OP_COMPLEX: | |
8161 | case OP_STRING: | |
8162 | case OP_BITSTRING: | |
8163 | case OP_ARRAY: | |
8164 | case OP_TYPE: | |
8165 | case OP_NAME: | |
8166 | case OP_OBJC_NSSTRING: | |
8167 | ||
8168 | case UNOP_NEG: | |
8169 | case UNOP_LOGICAL_NOT: | |
8170 | case UNOP_COMPLEMENT: | |
8171 | case UNOP_ADDR: | |
8172 | case UNOP_HIGH: | |
4a64f543 MS |
8173 | /* Unary, binary and ternary operators: We have to check |
8174 | their operands. If they are constant, then so is the | |
8175 | result of that operation. For instance, if A and B are | |
8176 | determined to be constants, then so is "A + B". | |
8177 | ||
8178 | UNOP_IND is one exception to the rule above, because the | |
8179 | value of *ADDR is not necessarily a constant, even when | |
8180 | ADDR is. */ | |
65d79d4b SDJ |
8181 | break; |
8182 | ||
8183 | case OP_VAR_VALUE: | |
8184 | /* Check whether the associated symbol is a constant. | |
4a64f543 | 8185 | |
65d79d4b | 8186 | We use SYMBOL_CLASS rather than TYPE_CONST because it's |
4a64f543 MS |
8187 | possible that a buggy compiler could mark a variable as |
8188 | constant even when it is not, and TYPE_CONST would return | |
8189 | true in this case, while SYMBOL_CLASS wouldn't. | |
8190 | ||
8191 | We also have to check for function symbols because they | |
8192 | are always constant. */ | |
65d79d4b SDJ |
8193 | { |
8194 | struct symbol *s = exp->elts[i + 2].symbol; | |
8195 | ||
8196 | if (SYMBOL_CLASS (s) != LOC_BLOCK | |
8197 | && SYMBOL_CLASS (s) != LOC_CONST | |
8198 | && SYMBOL_CLASS (s) != LOC_CONST_BYTES) | |
8199 | return 0; | |
8200 | break; | |
8201 | } | |
8202 | ||
8203 | /* The default action is to return 0 because we are using | |
8204 | the optimistic approach here: If we don't know something, | |
8205 | then it is not a constant. */ | |
8206 | default: | |
8207 | return 0; | |
8208 | } | |
8209 | } | |
8210 | ||
8211 | return 1; | |
8212 | } | |
8213 | ||
53a5351d JM |
8214 | /* accessflag: hw_write: watch write, |
8215 | hw_read: watch read, | |
8216 | hw_access: watch access (read or write) */ | |
c906108c | 8217 | static void |
84f4c1fe PM |
8218 | watch_command_1 (char *arg, int accessflag, int from_tty, |
8219 | int just_location, int internal) | |
c906108c | 8220 | { |
d983da9c | 8221 | struct breakpoint *b, *scope_breakpoint = NULL; |
c906108c | 8222 | struct expression *exp; |
60e1c644 | 8223 | struct block *exp_valid_block = NULL, *cond_exp_valid_block = NULL; |
a1442452 | 8224 | struct value *val, *mark, *result; |
c906108c | 8225 | struct frame_info *frame; |
c906108c SS |
8226 | char *exp_start = NULL; |
8227 | char *exp_end = NULL; | |
37e4754d | 8228 | char *tok, *id_tok_start, *end_tok; |
c906108c SS |
8229 | int toklen; |
8230 | char *cond_start = NULL; | |
8231 | char *cond_end = NULL; | |
c906108c SS |
8232 | int i, other_type_used, target_resources_ok = 0; |
8233 | enum bptype bp_type; | |
8234 | int mem_cnt = 0; | |
37e4754d | 8235 | int thread = -1; |
0cf6dd15 | 8236 | int pc = 0; |
c906108c | 8237 | |
37e4754d LM |
8238 | /* Make sure that we actually have parameters to parse. */ |
8239 | if (arg != NULL && arg[0] != '\0') | |
8240 | { | |
8241 | toklen = strlen (arg); /* Size of argument list. */ | |
8242 | ||
8243 | /* Points tok to the end of the argument list. */ | |
8244 | tok = arg + toklen - 1; | |
8245 | ||
4a64f543 MS |
8246 | /* Go backwards in the parameters list. Skip the last |
8247 | parameter. If we're expecting a 'thread <thread_num>' | |
8248 | parameter, this should be the thread identifier. */ | |
37e4754d LM |
8249 | while (tok > arg && (*tok == ' ' || *tok == '\t')) |
8250 | tok--; | |
8251 | while (tok > arg && (*tok != ' ' && *tok != '\t')) | |
8252 | tok--; | |
8253 | ||
8254 | /* Points end_tok to the beginning of the last token. */ | |
8255 | id_tok_start = tok + 1; | |
8256 | ||
4a64f543 MS |
8257 | /* Go backwards in the parameters list. Skip one more |
8258 | parameter. If we're expecting a 'thread <thread_num>' | |
8259 | parameter, we should reach a "thread" token. */ | |
37e4754d LM |
8260 | while (tok > arg && (*tok == ' ' || *tok == '\t')) |
8261 | tok--; | |
8262 | ||
8263 | end_tok = tok; | |
8264 | ||
8265 | while (tok > arg && (*tok != ' ' && *tok != '\t')) | |
8266 | tok--; | |
8267 | ||
8268 | /* Move the pointer forward to skip the whitespace and | |
8269 | calculate the length of the token. */ | |
8270 | tok++; | |
8271 | toklen = end_tok - tok; | |
8272 | ||
8273 | if (toklen >= 1 && strncmp (tok, "thread", toklen) == 0) | |
8274 | { | |
8275 | /* At this point we've found a "thread" token, which means | |
8276 | the user is trying to set a watchpoint that triggers | |
8277 | only in a specific thread. */ | |
8278 | char *endp; | |
8279 | ||
8280 | /* Extract the thread ID from the next token. */ | |
8281 | thread = strtol (id_tok_start, &endp, 0); | |
8282 | ||
8283 | /* Check if the user provided a valid numeric value for the | |
8284 | thread ID. */ | |
8285 | if (*endp != ' ' && *endp != '\t' && *endp != '\0') | |
8286 | error (_("Invalid thread ID specification %s."), id_tok_start); | |
8287 | ||
8288 | /* Check if the thread actually exists. */ | |
8289 | if (!valid_thread_id (thread)) | |
8290 | error (_("Unknown thread %d."), thread); | |
8291 | ||
8292 | /* Truncate the string and get rid of the thread <thread_num> | |
8293 | parameter before the parameter list is parsed by the | |
8294 | evaluate_expression() function. */ | |
8295 | *tok = '\0'; | |
8296 | } | |
8297 | } | |
8298 | ||
8299 | /* Parse the rest of the arguments. */ | |
c906108c SS |
8300 | innermost_block = NULL; |
8301 | exp_start = arg; | |
8302 | exp = parse_exp_1 (&arg, 0, 0); | |
8303 | exp_end = arg; | |
fa8a61dc TT |
8304 | /* Remove trailing whitespace from the expression before saving it. |
8305 | This makes the eventual display of the expression string a bit | |
8306 | prettier. */ | |
8307 | while (exp_end > exp_start && (exp_end[-1] == ' ' || exp_end[-1] == '\t')) | |
8308 | --exp_end; | |
8309 | ||
65d79d4b SDJ |
8310 | /* Checking if the expression is not constant. */ |
8311 | if (watchpoint_exp_is_const (exp)) | |
8312 | { | |
8313 | int len; | |
8314 | ||
8315 | len = exp_end - exp_start; | |
8316 | while (len > 0 && isspace (exp_start[len - 1])) | |
8317 | len--; | |
8318 | error (_("Cannot watch constant value `%.*s'."), len, exp_start); | |
8319 | } | |
8320 | ||
c906108c SS |
8321 | exp_valid_block = innermost_block; |
8322 | mark = value_mark (); | |
a1442452 | 8323 | fetch_subexp_value (exp, &pc, &val, &result, NULL); |
06a64a0b TT |
8324 | |
8325 | if (just_location) | |
8326 | { | |
8327 | exp_valid_block = NULL; | |
a1442452 | 8328 | val = value_addr (result); |
06a64a0b TT |
8329 | release_value (val); |
8330 | value_free_to_mark (mark); | |
8331 | } | |
8332 | else if (val != NULL) | |
fa4727a6 | 8333 | release_value (val); |
c906108c SS |
8334 | |
8335 | tok = arg; | |
8336 | while (*tok == ' ' || *tok == '\t') | |
8337 | tok++; | |
8338 | end_tok = tok; | |
8339 | ||
8340 | while (*end_tok != ' ' && *end_tok != '\t' && *end_tok != '\000') | |
8341 | end_tok++; | |
8342 | ||
8343 | toklen = end_tok - tok; | |
8344 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) | |
8345 | { | |
2d134ed3 PA |
8346 | struct expression *cond; |
8347 | ||
60e1c644 | 8348 | innermost_block = NULL; |
c906108c SS |
8349 | tok = cond_start = end_tok + 1; |
8350 | cond = parse_exp_1 (&tok, 0, 0); | |
60e1c644 PA |
8351 | |
8352 | /* The watchpoint expression may not be local, but the condition | |
8353 | may still be. E.g.: `watch global if local > 0'. */ | |
8354 | cond_exp_valid_block = innermost_block; | |
8355 | ||
2d134ed3 | 8356 | xfree (cond); |
c906108c SS |
8357 | cond_end = tok; |
8358 | } | |
8359 | if (*tok) | |
8a3fe4f8 | 8360 | error (_("Junk at end of command.")); |
c906108c | 8361 | |
53a5351d | 8362 | if (accessflag == hw_read) |
c5aa993b | 8363 | bp_type = bp_read_watchpoint; |
53a5351d | 8364 | else if (accessflag == hw_access) |
c5aa993b JM |
8365 | bp_type = bp_access_watchpoint; |
8366 | else | |
8367 | bp_type = bp_hardware_watchpoint; | |
c906108c SS |
8368 | |
8369 | mem_cnt = can_use_hardware_watchpoint (val); | |
8370 | if (mem_cnt == 0 && bp_type != bp_hardware_watchpoint) | |
8a3fe4f8 | 8371 | error (_("Expression cannot be implemented with read/access watchpoint.")); |
c5aa993b JM |
8372 | if (mem_cnt != 0) |
8373 | { | |
8374 | i = hw_watchpoint_used_count (bp_type, &other_type_used); | |
53a5351d | 8375 | target_resources_ok = |
d92524f1 | 8376 | target_can_use_hardware_watchpoint (bp_type, i + mem_cnt, |
53a5351d | 8377 | other_type_used); |
c5aa993b | 8378 | if (target_resources_ok == 0 && bp_type != bp_hardware_watchpoint) |
8a3fe4f8 | 8379 | error (_("Target does not support this type of hardware watchpoint.")); |
53a5351d | 8380 | |
c5aa993b | 8381 | if (target_resources_ok < 0 && bp_type != bp_hardware_watchpoint) |
3e43a32a MS |
8382 | error (_("Target can only support one kind " |
8383 | "of HW watchpoint at a time.")); | |
c5aa993b | 8384 | } |
c906108c | 8385 | |
4a64f543 MS |
8386 | /* Change the type of breakpoint to an ordinary watchpoint if a |
8387 | hardware watchpoint could not be set. */ | |
4d28f7a8 KB |
8388 | if (!mem_cnt || target_resources_ok <= 0) |
8389 | bp_type = bp_watchpoint; | |
8390 | ||
d983da9c | 8391 | frame = block_innermost_frame (exp_valid_block); |
d983da9c DJ |
8392 | |
8393 | /* If the expression is "local", then set up a "watchpoint scope" | |
8394 | breakpoint at the point where we've left the scope of the watchpoint | |
8395 | expression. Create the scope breakpoint before the watchpoint, so | |
8396 | that we will encounter it first in bpstat_stop_status. */ | |
60e1c644 | 8397 | if (exp_valid_block && frame) |
d983da9c | 8398 | { |
edb3359d DJ |
8399 | if (frame_id_p (frame_unwind_caller_id (frame))) |
8400 | { | |
8401 | scope_breakpoint | |
a6d9a66e UW |
8402 | = create_internal_breakpoint (frame_unwind_caller_arch (frame), |
8403 | frame_unwind_caller_pc (frame), | |
edb3359d | 8404 | bp_watchpoint_scope); |
d983da9c | 8405 | |
edb3359d | 8406 | scope_breakpoint->enable_state = bp_enabled; |
d983da9c | 8407 | |
edb3359d DJ |
8408 | /* Automatically delete the breakpoint when it hits. */ |
8409 | scope_breakpoint->disposition = disp_del; | |
d983da9c | 8410 | |
edb3359d DJ |
8411 | /* Only break in the proper frame (help with recursion). */ |
8412 | scope_breakpoint->frame_id = frame_unwind_caller_id (frame); | |
d983da9c | 8413 | |
edb3359d | 8414 | /* Set the address at which we will stop. */ |
a6d9a66e UW |
8415 | scope_breakpoint->loc->gdbarch |
8416 | = frame_unwind_caller_arch (frame); | |
edb3359d DJ |
8417 | scope_breakpoint->loc->requested_address |
8418 | = frame_unwind_caller_pc (frame); | |
8419 | scope_breakpoint->loc->address | |
a6d9a66e UW |
8420 | = adjust_breakpoint_address (scope_breakpoint->loc->gdbarch, |
8421 | scope_breakpoint->loc->requested_address, | |
edb3359d DJ |
8422 | scope_breakpoint->type); |
8423 | } | |
d983da9c DJ |
8424 | } |
8425 | ||
c906108c | 8426 | /* Now set up the breakpoint. */ |
2d134ed3 | 8427 | b = set_raw_breakpoint_without_location (NULL, bp_type); |
84f4c1fe | 8428 | set_breakpoint_number (internal, b); |
37e4754d | 8429 | b->thread = thread; |
b5de0fa7 | 8430 | b->disposition = disp_donttouch; |
c906108c SS |
8431 | b->exp = exp; |
8432 | b->exp_valid_block = exp_valid_block; | |
60e1c644 | 8433 | b->cond_exp_valid_block = cond_exp_valid_block; |
06a64a0b TT |
8434 | if (just_location) |
8435 | { | |
8436 | struct type *t = value_type (val); | |
8437 | CORE_ADDR addr = value_as_address (val); | |
8438 | char *name; | |
8439 | ||
8440 | t = check_typedef (TYPE_TARGET_TYPE (check_typedef (t))); | |
8441 | name = type_to_string (t); | |
8442 | ||
d63d0675 JK |
8443 | b->exp_string_reparse = xstrprintf ("* (%s *) %s", name, |
8444 | core_addr_to_string (addr)); | |
06a64a0b TT |
8445 | xfree (name); |
8446 | ||
d63d0675 JK |
8447 | b->exp_string = xstrprintf ("-location: %.*s", |
8448 | (int) (exp_end - exp_start), exp_start); | |
8449 | ||
06a64a0b TT |
8450 | /* The above expression is in C. */ |
8451 | b->language = language_c; | |
8452 | } | |
8453 | else | |
8454 | b->exp_string = savestring (exp_start, exp_end - exp_start); | |
c906108c | 8455 | b->val = val; |
fa4727a6 | 8456 | b->val_valid = 1; |
c906108c SS |
8457 | if (cond_start) |
8458 | b->cond_string = savestring (cond_start, cond_end - cond_start); | |
8459 | else | |
8460 | b->cond_string = 0; | |
c5aa993b | 8461 | |
c906108c | 8462 | if (frame) |
f6bc2008 PA |
8463 | { |
8464 | b->watchpoint_frame = get_frame_id (frame); | |
8465 | b->watchpoint_thread = inferior_ptid; | |
8466 | } | |
c906108c | 8467 | else |
f6bc2008 PA |
8468 | { |
8469 | b->watchpoint_frame = null_frame_id; | |
8470 | b->watchpoint_thread = null_ptid; | |
8471 | } | |
c906108c | 8472 | |
d983da9c | 8473 | if (scope_breakpoint != NULL) |
c906108c | 8474 | { |
d983da9c DJ |
8475 | /* The scope breakpoint is related to the watchpoint. We will |
8476 | need to act on them together. */ | |
8477 | b->related_breakpoint = scope_breakpoint; | |
8478 | scope_breakpoint->related_breakpoint = b; | |
c906108c | 8479 | } |
d983da9c | 8480 | |
06a64a0b TT |
8481 | if (!just_location) |
8482 | value_free_to_mark (mark); | |
2d134ed3 PA |
8483 | |
8484 | /* Finally update the new watchpoint. This creates the locations | |
8485 | that should be inserted. */ | |
8486 | update_watchpoint (b, 1); | |
84f4c1fe PM |
8487 | if (internal) |
8488 | /* Do not mention breakpoints with a negative number, but do | |
8489 | notify observers. */ | |
8490 | observer_notify_breakpoint_created (b->number); | |
8491 | else | |
8492 | mention (b); | |
b60e7edf | 8493 | update_global_location_list (1); |
c906108c SS |
8494 | } |
8495 | ||
4a64f543 MS |
8496 | /* Return count of locations need to be watched and can be handled in |
8497 | hardware. If the watchpoint can not be handled in hardware return | |
8498 | zero. */ | |
c906108c | 8499 | |
c906108c | 8500 | static int |
fba45db2 | 8501 | can_use_hardware_watchpoint (struct value *v) |
c906108c SS |
8502 | { |
8503 | int found_memory_cnt = 0; | |
2e70b7b9 | 8504 | struct value *head = v; |
c906108c SS |
8505 | |
8506 | /* Did the user specifically forbid us to use hardware watchpoints? */ | |
c5aa993b | 8507 | if (!can_use_hw_watchpoints) |
c906108c | 8508 | return 0; |
c5aa993b | 8509 | |
5c44784c JM |
8510 | /* Make sure that the value of the expression depends only upon |
8511 | memory contents, and values computed from them within GDB. If we | |
8512 | find any register references or function calls, we can't use a | |
8513 | hardware watchpoint. | |
8514 | ||
8515 | The idea here is that evaluating an expression generates a series | |
8516 | of values, one holding the value of every subexpression. (The | |
8517 | expression a*b+c has five subexpressions: a, b, a*b, c, and | |
8518 | a*b+c.) GDB's values hold almost enough information to establish | |
8519 | the criteria given above --- they identify memory lvalues, | |
8520 | register lvalues, computed values, etcetera. So we can evaluate | |
8521 | the expression, and then scan the chain of values that leaves | |
8522 | behind to decide whether we can detect any possible change to the | |
8523 | expression's final value using only hardware watchpoints. | |
8524 | ||
8525 | However, I don't think that the values returned by inferior | |
8526 | function calls are special in any way. So this function may not | |
8527 | notice that an expression involving an inferior function call | |
8528 | can't be watched with hardware watchpoints. FIXME. */ | |
17cf0ecd | 8529 | for (; v; v = value_next (v)) |
c906108c | 8530 | { |
5c44784c | 8531 | if (VALUE_LVAL (v) == lval_memory) |
c906108c | 8532 | { |
8464be76 DJ |
8533 | if (v != head && value_lazy (v)) |
8534 | /* A lazy memory lvalue in the chain is one that GDB never | |
8535 | needed to fetch; we either just used its address (e.g., | |
8536 | `a' in `a.b') or we never needed it at all (e.g., `a' | |
8537 | in `a,b'). This doesn't apply to HEAD; if that is | |
8538 | lazy then it was not readable, but watch it anyway. */ | |
5c44784c | 8539 | ; |
53a5351d | 8540 | else |
5c44784c JM |
8541 | { |
8542 | /* Ahh, memory we actually used! Check if we can cover | |
8543 | it with hardware watchpoints. */ | |
df407dfe | 8544 | struct type *vtype = check_typedef (value_type (v)); |
2e70b7b9 MS |
8545 | |
8546 | /* We only watch structs and arrays if user asked for it | |
8547 | explicitly, never if they just happen to appear in a | |
8548 | middle of some value chain. */ | |
8549 | if (v == head | |
8550 | || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT | |
8551 | && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) | |
8552 | { | |
42ae5230 | 8553 | CORE_ADDR vaddr = value_address (v); |
df407dfe | 8554 | int len = TYPE_LENGTH (value_type (v)); |
2e70b7b9 | 8555 | |
d92524f1 | 8556 | if (!target_region_ok_for_hw_watchpoint (vaddr, len)) |
2e70b7b9 MS |
8557 | return 0; |
8558 | else | |
8559 | found_memory_cnt++; | |
8560 | } | |
5c44784c | 8561 | } |
c5aa993b | 8562 | } |
5086187c AC |
8563 | else if (VALUE_LVAL (v) != not_lval |
8564 | && deprecated_value_modifiable (v) == 0) | |
38b6c3b3 | 8565 | return 0; /* These are values from the history (e.g., $1). */ |
5086187c | 8566 | else if (VALUE_LVAL (v) == lval_register) |
38b6c3b3 | 8567 | return 0; /* Cannot watch a register with a HW watchpoint. */ |
c906108c SS |
8568 | } |
8569 | ||
8570 | /* The expression itself looks suitable for using a hardware | |
8571 | watchpoint, but give the target machine a chance to reject it. */ | |
8572 | return found_memory_cnt; | |
8573 | } | |
8574 | ||
8b93c638 | 8575 | void |
84f4c1fe | 8576 | watch_command_wrapper (char *arg, int from_tty, int internal) |
8b93c638 | 8577 | { |
84f4c1fe | 8578 | watch_command_1 (arg, hw_write, from_tty, 0, internal); |
06a64a0b TT |
8579 | } |
8580 | ||
8581 | /* A helper function that looks for an argument at the start of a | |
8582 | string. The argument must also either be at the end of the string, | |
8583 | or be followed by whitespace. Returns 1 if it finds the argument, | |
8584 | 0 otherwise. If the argument is found, it updates *STR. */ | |
8585 | ||
8586 | static int | |
8587 | check_for_argument (char **str, char *arg, int arg_len) | |
8588 | { | |
8589 | if (strncmp (*str, arg, arg_len) == 0 | |
8590 | && ((*str)[arg_len] == '\0' || isspace ((*str)[arg_len]))) | |
8591 | { | |
8592 | *str += arg_len; | |
8593 | return 1; | |
8594 | } | |
8595 | return 0; | |
8596 | } | |
8597 | ||
8598 | /* A helper function that looks for the "-location" argument and then | |
8599 | calls watch_command_1. */ | |
8600 | ||
8601 | static void | |
8602 | watch_maybe_just_location (char *arg, int accessflag, int from_tty) | |
8603 | { | |
8604 | int just_location = 0; | |
8605 | ||
8606 | if (arg | |
8607 | && (check_for_argument (&arg, "-location", sizeof ("-location") - 1) | |
8608 | || check_for_argument (&arg, "-l", sizeof ("-l") - 1))) | |
8609 | { | |
8610 | ep_skip_leading_whitespace (&arg); | |
8611 | just_location = 1; | |
8612 | } | |
8613 | ||
84f4c1fe | 8614 | watch_command_1 (arg, accessflag, from_tty, just_location, 0); |
8b93c638 | 8615 | } |
8926118c | 8616 | |
c5aa993b | 8617 | static void |
fba45db2 | 8618 | watch_command (char *arg, int from_tty) |
c906108c | 8619 | { |
06a64a0b | 8620 | watch_maybe_just_location (arg, hw_write, from_tty); |
c906108c SS |
8621 | } |
8622 | ||
8b93c638 | 8623 | void |
84f4c1fe | 8624 | rwatch_command_wrapper (char *arg, int from_tty, int internal) |
8b93c638 | 8625 | { |
84f4c1fe | 8626 | watch_command_1 (arg, hw_read, from_tty, 0, internal); |
8b93c638 | 8627 | } |
8926118c | 8628 | |
c5aa993b | 8629 | static void |
fba45db2 | 8630 | rwatch_command (char *arg, int from_tty) |
c906108c | 8631 | { |
06a64a0b | 8632 | watch_maybe_just_location (arg, hw_read, from_tty); |
c906108c SS |
8633 | } |
8634 | ||
8b93c638 | 8635 | void |
84f4c1fe | 8636 | awatch_command_wrapper (char *arg, int from_tty, int internal) |
8b93c638 | 8637 | { |
84f4c1fe | 8638 | watch_command_1 (arg, hw_access, from_tty, 0, internal); |
8b93c638 | 8639 | } |
8926118c | 8640 | |
c5aa993b | 8641 | static void |
fba45db2 | 8642 | awatch_command (char *arg, int from_tty) |
c906108c | 8643 | { |
06a64a0b | 8644 | watch_maybe_just_location (arg, hw_access, from_tty); |
c906108c | 8645 | } |
c906108c | 8646 | \f |
c5aa993b | 8647 | |
43ff13b4 | 8648 | /* Helper routines for the until_command routine in infcmd.c. Here |
c906108c SS |
8649 | because it uses the mechanisms of breakpoints. */ |
8650 | ||
bfec99b2 PA |
8651 | struct until_break_command_continuation_args |
8652 | { | |
8653 | struct breakpoint *breakpoint; | |
8654 | struct breakpoint *breakpoint2; | |
186c406b | 8655 | int thread_num; |
bfec99b2 PA |
8656 | }; |
8657 | ||
43ff13b4 | 8658 | /* This function is called by fetch_inferior_event via the |
4a64f543 | 8659 | cmd_continuation pointer, to complete the until command. It takes |
43ff13b4 | 8660 | care of cleaning up the temporary breakpoints set up by the until |
4a64f543 | 8661 | command. */ |
c2c6d25f | 8662 | static void |
604ead4a | 8663 | until_break_command_continuation (void *arg) |
43ff13b4 | 8664 | { |
bfec99b2 PA |
8665 | struct until_break_command_continuation_args *a = arg; |
8666 | ||
8667 | delete_breakpoint (a->breakpoint); | |
8668 | if (a->breakpoint2) | |
8669 | delete_breakpoint (a->breakpoint2); | |
186c406b | 8670 | delete_longjmp_breakpoint (a->thread_num); |
43ff13b4 JM |
8671 | } |
8672 | ||
c906108c | 8673 | void |
ae66c1fc | 8674 | until_break_command (char *arg, int from_tty, int anywhere) |
c906108c SS |
8675 | { |
8676 | struct symtabs_and_lines sals; | |
8677 | struct symtab_and_line sal; | |
206415a3 | 8678 | struct frame_info *frame = get_selected_frame (NULL); |
c906108c | 8679 | struct breakpoint *breakpoint; |
f107f563 | 8680 | struct breakpoint *breakpoint2 = NULL; |
c906108c | 8681 | struct cleanup *old_chain; |
186c406b TT |
8682 | int thread; |
8683 | struct thread_info *tp; | |
c906108c SS |
8684 | |
8685 | clear_proceed_status (); | |
8686 | ||
8687 | /* Set a breakpoint where the user wants it and at return from | |
4a64f543 | 8688 | this function. */ |
c5aa993b | 8689 | |
c906108c SS |
8690 | if (default_breakpoint_valid) |
8691 | sals = decode_line_1 (&arg, 1, default_breakpoint_symtab, | |
68219205 | 8692 | default_breakpoint_line, (char ***) NULL, NULL); |
c906108c | 8693 | else |
53a5351d | 8694 | sals = decode_line_1 (&arg, 1, (struct symtab *) NULL, |
68219205 | 8695 | 0, (char ***) NULL, NULL); |
c5aa993b | 8696 | |
c906108c | 8697 | if (sals.nelts != 1) |
8a3fe4f8 | 8698 | error (_("Couldn't get information on specified line.")); |
c5aa993b | 8699 | |
c906108c | 8700 | sal = sals.sals[0]; |
4a64f543 | 8701 | xfree (sals.sals); /* malloc'd, so freed. */ |
c5aa993b | 8702 | |
c906108c | 8703 | if (*arg) |
8a3fe4f8 | 8704 | error (_("Junk at end of arguments.")); |
c5aa993b | 8705 | |
c906108c | 8706 | resolve_sal_pc (&sal); |
c5aa993b | 8707 | |
ae66c1fc EZ |
8708 | if (anywhere) |
8709 | /* If the user told us to continue until a specified location, | |
8710 | we don't specify a frame at which we need to stop. */ | |
a6d9a66e UW |
8711 | breakpoint = set_momentary_breakpoint (get_frame_arch (frame), sal, |
8712 | null_frame_id, bp_until); | |
ae66c1fc | 8713 | else |
4a64f543 MS |
8714 | /* Otherwise, specify the selected frame, because we want to stop |
8715 | only at the very same frame. */ | |
a6d9a66e UW |
8716 | breakpoint = set_momentary_breakpoint (get_frame_arch (frame), sal, |
8717 | get_stack_frame_id (frame), | |
ae66c1fc | 8718 | bp_until); |
c5aa993b | 8719 | |
f107f563 | 8720 | old_chain = make_cleanup_delete_breakpoint (breakpoint); |
c906108c | 8721 | |
186c406b TT |
8722 | tp = inferior_thread (); |
8723 | thread = tp->num; | |
8724 | ||
ae66c1fc EZ |
8725 | /* Keep within the current frame, or in frames called by the current |
8726 | one. */ | |
edb3359d DJ |
8727 | |
8728 | if (frame_id_p (frame_unwind_caller_id (frame))) | |
c906108c | 8729 | { |
edb3359d DJ |
8730 | sal = find_pc_line (frame_unwind_caller_pc (frame), 0); |
8731 | sal.pc = frame_unwind_caller_pc (frame); | |
a6d9a66e UW |
8732 | breakpoint2 = set_momentary_breakpoint (frame_unwind_caller_arch (frame), |
8733 | sal, | |
edb3359d | 8734 | frame_unwind_caller_id (frame), |
f107f563 VP |
8735 | bp_until); |
8736 | make_cleanup_delete_breakpoint (breakpoint2); | |
186c406b TT |
8737 | |
8738 | set_longjmp_breakpoint (tp, frame_unwind_caller_id (frame)); | |
8739 | make_cleanup (delete_longjmp_breakpoint_cleanup, &thread); | |
c906108c | 8740 | } |
c5aa993b | 8741 | |
c906108c | 8742 | proceed (-1, TARGET_SIGNAL_DEFAULT, 0); |
f107f563 | 8743 | |
4a64f543 MS |
8744 | /* If we are running asynchronously, and proceed call above has |
8745 | actually managed to start the target, arrange for breakpoints to | |
8746 | be deleted when the target stops. Otherwise, we're already | |
8747 | stopped and delete breakpoints via cleanup chain. */ | |
f107f563 | 8748 | |
8ea051c5 | 8749 | if (target_can_async_p () && is_running (inferior_ptid)) |
f107f563 | 8750 | { |
bfec99b2 PA |
8751 | struct until_break_command_continuation_args *args; |
8752 | args = xmalloc (sizeof (*args)); | |
f107f563 | 8753 | |
bfec99b2 PA |
8754 | args->breakpoint = breakpoint; |
8755 | args->breakpoint2 = breakpoint2; | |
186c406b | 8756 | args->thread_num = thread; |
f107f563 VP |
8757 | |
8758 | discard_cleanups (old_chain); | |
95e54da7 PA |
8759 | add_continuation (inferior_thread (), |
8760 | until_break_command_continuation, args, | |
604ead4a | 8761 | xfree); |
f107f563 VP |
8762 | } |
8763 | else | |
c5aa993b | 8764 | do_cleanups (old_chain); |
c906108c | 8765 | } |
ae66c1fc | 8766 | |
c906108c | 8767 | static void |
fba45db2 | 8768 | ep_skip_leading_whitespace (char **s) |
c906108c | 8769 | { |
c5aa993b JM |
8770 | if ((s == NULL) || (*s == NULL)) |
8771 | return; | |
8772 | while (isspace (**s)) | |
8773 | *s += 1; | |
c906108c | 8774 | } |
c5aa993b | 8775 | |
c906108c SS |
8776 | /* This function attempts to parse an optional "if <cond>" clause |
8777 | from the arg string. If one is not found, it returns NULL. | |
c5aa993b | 8778 | |
c906108c SS |
8779 | Else, it returns a pointer to the condition string. (It does not |
8780 | attempt to evaluate the string against a particular block.) And, | |
8781 | it updates arg to point to the first character following the parsed | |
4a64f543 | 8782 | if clause in the arg string. */ |
53a5351d | 8783 | |
c906108c | 8784 | static char * |
fba45db2 | 8785 | ep_parse_optional_if_clause (char **arg) |
c906108c | 8786 | { |
c5aa993b JM |
8787 | char *cond_string; |
8788 | ||
8789 | if (((*arg)[0] != 'i') || ((*arg)[1] != 'f') || !isspace ((*arg)[2])) | |
c906108c | 8790 | return NULL; |
c5aa993b | 8791 | |
4a64f543 | 8792 | /* Skip the "if" keyword. */ |
c906108c | 8793 | (*arg) += 2; |
c5aa993b | 8794 | |
c906108c | 8795 | /* Skip any extra leading whitespace, and record the start of the |
4a64f543 | 8796 | condition string. */ |
c906108c SS |
8797 | ep_skip_leading_whitespace (arg); |
8798 | cond_string = *arg; | |
c5aa993b | 8799 | |
4a64f543 MS |
8800 | /* Assume that the condition occupies the remainder of the arg |
8801 | string. */ | |
c906108c | 8802 | (*arg) += strlen (cond_string); |
c5aa993b | 8803 | |
c906108c SS |
8804 | return cond_string; |
8805 | } | |
c5aa993b | 8806 | |
c906108c SS |
8807 | /* Commands to deal with catching events, such as signals, exceptions, |
8808 | process start/exit, etc. */ | |
c5aa993b JM |
8809 | |
8810 | typedef enum | |
8811 | { | |
44feb3ce TT |
8812 | catch_fork_temporary, catch_vfork_temporary, |
8813 | catch_fork_permanent, catch_vfork_permanent | |
c5aa993b JM |
8814 | } |
8815 | catch_fork_kind; | |
8816 | ||
c906108c | 8817 | static void |
cc59ec59 MS |
8818 | catch_fork_command_1 (char *arg, int from_tty, |
8819 | struct cmd_list_element *command) | |
c906108c | 8820 | { |
a6d9a66e | 8821 | struct gdbarch *gdbarch = get_current_arch (); |
c5aa993b | 8822 | char *cond_string = NULL; |
44feb3ce TT |
8823 | catch_fork_kind fork_kind; |
8824 | int tempflag; | |
8825 | ||
8826 | fork_kind = (catch_fork_kind) (uintptr_t) get_cmd_context (command); | |
8827 | tempflag = (fork_kind == catch_fork_temporary | |
8828 | || fork_kind == catch_vfork_temporary); | |
c5aa993b | 8829 | |
44feb3ce TT |
8830 | if (!arg) |
8831 | arg = ""; | |
c906108c | 8832 | ep_skip_leading_whitespace (&arg); |
c5aa993b | 8833 | |
c906108c | 8834 | /* The allowed syntax is: |
c5aa993b JM |
8835 | catch [v]fork |
8836 | catch [v]fork if <cond> | |
8837 | ||
4a64f543 | 8838 | First, check if there's an if clause. */ |
c906108c | 8839 | cond_string = ep_parse_optional_if_clause (&arg); |
c5aa993b | 8840 | |
c906108c | 8841 | if ((*arg != '\0') && !isspace (*arg)) |
8a3fe4f8 | 8842 | error (_("Junk at end of arguments.")); |
c5aa993b | 8843 | |
c906108c | 8844 | /* If this target supports it, create a fork or vfork catchpoint |
4a64f543 | 8845 | and enable reporting of such events. */ |
c5aa993b JM |
8846 | switch (fork_kind) |
8847 | { | |
44feb3ce TT |
8848 | case catch_fork_temporary: |
8849 | case catch_fork_permanent: | |
a6d9a66e | 8850 | create_fork_vfork_event_catchpoint (gdbarch, tempflag, cond_string, |
ce78b96d | 8851 | &catch_fork_breakpoint_ops); |
c906108c | 8852 | break; |
44feb3ce TT |
8853 | case catch_vfork_temporary: |
8854 | case catch_vfork_permanent: | |
a6d9a66e | 8855 | create_fork_vfork_event_catchpoint (gdbarch, tempflag, cond_string, |
ce78b96d | 8856 | &catch_vfork_breakpoint_ops); |
c906108c | 8857 | break; |
c5aa993b | 8858 | default: |
8a3fe4f8 | 8859 | error (_("unsupported or unknown fork kind; cannot catch it")); |
c906108c | 8860 | break; |
c5aa993b | 8861 | } |
c906108c SS |
8862 | } |
8863 | ||
8864 | static void | |
cc59ec59 MS |
8865 | catch_exec_command_1 (char *arg, int from_tty, |
8866 | struct cmd_list_element *command) | |
c906108c | 8867 | { |
a6d9a66e | 8868 | struct gdbarch *gdbarch = get_current_arch (); |
44feb3ce | 8869 | int tempflag; |
c5aa993b | 8870 | char *cond_string = NULL; |
c906108c | 8871 | |
44feb3ce TT |
8872 | tempflag = get_cmd_context (command) == CATCH_TEMPORARY; |
8873 | ||
8874 | if (!arg) | |
8875 | arg = ""; | |
c906108c SS |
8876 | ep_skip_leading_whitespace (&arg); |
8877 | ||
8878 | /* The allowed syntax is: | |
c5aa993b JM |
8879 | catch exec |
8880 | catch exec if <cond> | |
c906108c | 8881 | |
4a64f543 | 8882 | First, check if there's an if clause. */ |
c906108c SS |
8883 | cond_string = ep_parse_optional_if_clause (&arg); |
8884 | ||
8885 | if ((*arg != '\0') && !isspace (*arg)) | |
8a3fe4f8 | 8886 | error (_("Junk at end of arguments.")); |
c906108c SS |
8887 | |
8888 | /* If this target supports it, create an exec catchpoint | |
4a64f543 | 8889 | and enable reporting of such events. */ |
a6d9a66e UW |
8890 | create_catchpoint (gdbarch, tempflag, cond_string, |
8891 | &catch_exec_breakpoint_ops); | |
c906108c | 8892 | } |
c5aa993b | 8893 | |
3086aeae DJ |
8894 | static enum print_stop_action |
8895 | print_exception_catchpoint (struct breakpoint *b) | |
8896 | { | |
ade92717 | 8897 | int bp_temp, bp_throw; |
3086aeae | 8898 | |
ade92717 | 8899 | annotate_catchpoint (b->number); |
3086aeae | 8900 | |
ade92717 AR |
8901 | bp_throw = strstr (b->addr_string, "throw") != NULL; |
8902 | if (b->loc->address != b->loc->requested_address) | |
8903 | breakpoint_adjustment_warning (b->loc->requested_address, | |
8904 | b->loc->address, | |
8905 | b->number, 1); | |
df2b6d2d | 8906 | bp_temp = b->disposition == disp_del; |
ade92717 AR |
8907 | ui_out_text (uiout, |
8908 | bp_temp ? "Temporary catchpoint " | |
8909 | : "Catchpoint "); | |
8910 | if (!ui_out_is_mi_like_p (uiout)) | |
8911 | ui_out_field_int (uiout, "bkptno", b->number); | |
8912 | ui_out_text (uiout, | |
c0b37c48 AR |
8913 | bp_throw ? " (exception thrown), " |
8914 | : " (exception caught), "); | |
ade92717 AR |
8915 | if (ui_out_is_mi_like_p (uiout)) |
8916 | { | |
8917 | ui_out_field_string (uiout, "reason", | |
8918 | async_reason_lookup (EXEC_ASYNC_BREAKPOINT_HIT)); | |
8919 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); | |
8920 | ui_out_field_int (uiout, "bkptno", b->number); | |
8921 | } | |
3086aeae DJ |
8922 | return PRINT_SRC_AND_LOC; |
8923 | } | |
8924 | ||
8925 | static void | |
cc59ec59 MS |
8926 | print_one_exception_catchpoint (struct breakpoint *b, |
8927 | struct bp_location **last_loc) | |
3086aeae | 8928 | { |
79a45b7d | 8929 | struct value_print_options opts; |
cc59ec59 | 8930 | |
79a45b7d TT |
8931 | get_user_print_options (&opts); |
8932 | if (opts.addressprint) | |
3086aeae DJ |
8933 | { |
8934 | annotate_field (4); | |
604133b5 AR |
8935 | if (b->loc == NULL || b->loc->shlib_disabled) |
8936 | ui_out_field_string (uiout, "addr", "<PENDING>"); | |
8937 | else | |
5af949e3 UW |
8938 | ui_out_field_core_addr (uiout, "addr", |
8939 | b->loc->gdbarch, b->loc->address); | |
3086aeae DJ |
8940 | } |
8941 | annotate_field (5); | |
604133b5 | 8942 | if (b->loc) |
a6d9a66e | 8943 | *last_loc = b->loc; |
3086aeae DJ |
8944 | if (strstr (b->addr_string, "throw") != NULL) |
8945 | ui_out_field_string (uiout, "what", "exception throw"); | |
8946 | else | |
8947 | ui_out_field_string (uiout, "what", "exception catch"); | |
8948 | } | |
8949 | ||
8950 | static void | |
8951 | print_mention_exception_catchpoint (struct breakpoint *b) | |
8952 | { | |
ade92717 AR |
8953 | int bp_temp; |
8954 | int bp_throw; | |
8955 | ||
df2b6d2d | 8956 | bp_temp = b->disposition == disp_del; |
ade92717 AR |
8957 | bp_throw = strstr (b->addr_string, "throw") != NULL; |
8958 | ui_out_text (uiout, bp_temp ? _("Temporary catchpoint ") | |
8959 | : _("Catchpoint ")); | |
8960 | ui_out_field_int (uiout, "bkptno", b->number); | |
8961 | ui_out_text (uiout, bp_throw ? _(" (throw)") | |
8962 | : _(" (catch)")); | |
3086aeae DJ |
8963 | } |
8964 | ||
6149aea9 PA |
8965 | /* Implement the "print_recreate" breakpoint_ops method for throw and |
8966 | catch catchpoints. */ | |
8967 | ||
8968 | static void | |
4a64f543 MS |
8969 | print_recreate_exception_catchpoint (struct breakpoint *b, |
8970 | struct ui_file *fp) | |
6149aea9 PA |
8971 | { |
8972 | int bp_temp; | |
8973 | int bp_throw; | |
8974 | ||
8975 | bp_temp = b->disposition == disp_del; | |
8976 | bp_throw = strstr (b->addr_string, "throw") != NULL; | |
8977 | fprintf_unfiltered (fp, bp_temp ? "tcatch " : "catch "); | |
8978 | fprintf_unfiltered (fp, bp_throw ? "throw" : "catch"); | |
8979 | } | |
8980 | ||
3086aeae | 8981 | static struct breakpoint_ops gnu_v3_exception_catchpoint_ops = { |
ce78b96d JB |
8982 | NULL, /* insert */ |
8983 | NULL, /* remove */ | |
8984 | NULL, /* breakpoint_hit */ | |
3086aeae DJ |
8985 | print_exception_catchpoint, |
8986 | print_one_exception_catchpoint, | |
6149aea9 PA |
8987 | print_mention_exception_catchpoint, |
8988 | print_recreate_exception_catchpoint | |
3086aeae DJ |
8989 | }; |
8990 | ||
8991 | static int | |
8992 | handle_gnu_v3_exceptions (int tempflag, char *cond_string, | |
8993 | enum exception_event_kind ex_event, int from_tty) | |
8994 | { | |
604133b5 AR |
8995 | char *trigger_func_name; |
8996 | ||
3086aeae | 8997 | if (ex_event == EX_EVENT_CATCH) |
604133b5 | 8998 | trigger_func_name = "__cxa_begin_catch"; |
3086aeae | 8999 | else |
604133b5 | 9000 | trigger_func_name = "__cxa_throw"; |
3086aeae | 9001 | |
8cdf0e15 VP |
9002 | create_breakpoint (get_current_arch (), |
9003 | trigger_func_name, cond_string, -1, | |
9004 | 0 /* condition and thread are valid. */, | |
0fb4aa4b | 9005 | tempflag, bp_breakpoint, |
8cdf0e15 VP |
9006 | 0, |
9007 | AUTO_BOOLEAN_TRUE /* pending */, | |
9008 | &gnu_v3_exception_catchpoint_ops, from_tty, | |
84f4c1fe PM |
9009 | 1 /* enabled */, |
9010 | 0 /* internal */); | |
3086aeae | 9011 | |
3086aeae DJ |
9012 | return 1; |
9013 | } | |
9014 | ||
4a64f543 | 9015 | /* Deal with "catch catch" and "catch throw" commands. */ |
c906108c SS |
9016 | |
9017 | static void | |
fba45db2 KB |
9018 | catch_exception_command_1 (enum exception_event_kind ex_event, char *arg, |
9019 | int tempflag, int from_tty) | |
c906108c | 9020 | { |
c5aa993b | 9021 | char *cond_string = NULL; |
c5aa993b | 9022 | |
44feb3ce TT |
9023 | if (!arg) |
9024 | arg = ""; | |
c906108c | 9025 | ep_skip_leading_whitespace (&arg); |
c5aa993b | 9026 | |
c906108c SS |
9027 | cond_string = ep_parse_optional_if_clause (&arg); |
9028 | ||
9029 | if ((*arg != '\0') && !isspace (*arg)) | |
8a3fe4f8 | 9030 | error (_("Junk at end of arguments.")); |
c906108c | 9031 | |
059fb39f PM |
9032 | if (ex_event != EX_EVENT_THROW |
9033 | && ex_event != EX_EVENT_CATCH) | |
8a3fe4f8 | 9034 | error (_("Unsupported or unknown exception event; cannot catch it")); |
c906108c | 9035 | |
3086aeae DJ |
9036 | if (handle_gnu_v3_exceptions (tempflag, cond_string, ex_event, from_tty)) |
9037 | return; | |
9038 | ||
8a3fe4f8 | 9039 | warning (_("Unsupported with this platform/compiler combination.")); |
c906108c SS |
9040 | } |
9041 | ||
44feb3ce TT |
9042 | /* Implementation of "catch catch" command. */ |
9043 | ||
9044 | static void | |
9045 | catch_catch_command (char *arg, int from_tty, struct cmd_list_element *command) | |
9046 | { | |
9047 | int tempflag = get_cmd_context (command) == CATCH_TEMPORARY; | |
cc59ec59 | 9048 | |
44feb3ce TT |
9049 | catch_exception_command_1 (EX_EVENT_CATCH, arg, tempflag, from_tty); |
9050 | } | |
9051 | ||
9052 | /* Implementation of "catch throw" command. */ | |
9053 | ||
9054 | static void | |
9055 | catch_throw_command (char *arg, int from_tty, struct cmd_list_element *command) | |
9056 | { | |
9057 | int tempflag = get_cmd_context (command) == CATCH_TEMPORARY; | |
cc59ec59 | 9058 | |
44feb3ce TT |
9059 | catch_exception_command_1 (EX_EVENT_THROW, arg, tempflag, from_tty); |
9060 | } | |
9061 | ||
f7f9143b JB |
9062 | /* Create a breakpoint struct for Ada exception catchpoints. */ |
9063 | ||
9064 | static void | |
a6d9a66e UW |
9065 | create_ada_exception_breakpoint (struct gdbarch *gdbarch, |
9066 | struct symtab_and_line sal, | |
f7f9143b JB |
9067 | char *addr_string, |
9068 | char *exp_string, | |
9069 | char *cond_string, | |
9070 | struct expression *cond, | |
9071 | struct breakpoint_ops *ops, | |
9072 | int tempflag, | |
9073 | int from_tty) | |
9074 | { | |
9075 | struct breakpoint *b; | |
9076 | ||
9077 | if (from_tty) | |
9078 | { | |
5af949e3 UW |
9079 | struct gdbarch *loc_gdbarch = get_sal_arch (sal); |
9080 | if (!loc_gdbarch) | |
9081 | loc_gdbarch = gdbarch; | |
9082 | ||
6c95b8df PA |
9083 | describe_other_breakpoints (loc_gdbarch, |
9084 | sal.pspace, sal.pc, sal.section, -1); | |
f7f9143b JB |
9085 | /* FIXME: brobecker/2006-12-28: Actually, re-implement a special |
9086 | version for exception catchpoints, because two catchpoints | |
9087 | used for different exception names will use the same address. | |
9088 | In this case, a "breakpoint ... also set at..." warning is | |
4a64f543 | 9089 | unproductive. Besides, the warning phrasing is also a bit |
f7f9143b JB |
9090 | inapropriate, we should use the word catchpoint, and tell |
9091 | the user what type of catchpoint it is. The above is good | |
9092 | enough for now, though. */ | |
9093 | } | |
9094 | ||
a6d9a66e | 9095 | b = set_raw_breakpoint (gdbarch, sal, bp_breakpoint); |
f7f9143b JB |
9096 | set_breakpoint_count (breakpoint_count + 1); |
9097 | ||
9098 | b->enable_state = bp_enabled; | |
9099 | b->disposition = tempflag ? disp_del : disp_donttouch; | |
9100 | b->number = breakpoint_count; | |
9101 | b->ignore_count = 0; | |
511a6cd4 | 9102 | b->loc->cond = cond; |
f7f9143b JB |
9103 | b->addr_string = addr_string; |
9104 | b->language = language_ada; | |
9105 | b->cond_string = cond_string; | |
9106 | b->exp_string = exp_string; | |
9107 | b->thread = -1; | |
9108 | b->ops = ops; | |
f7f9143b JB |
9109 | |
9110 | mention (b); | |
b60e7edf | 9111 | update_global_location_list (1); |
f7f9143b JB |
9112 | } |
9113 | ||
9114 | /* Implement the "catch exception" command. */ | |
9115 | ||
9116 | static void | |
44feb3ce TT |
9117 | catch_ada_exception_command (char *arg, int from_tty, |
9118 | struct cmd_list_element *command) | |
f7f9143b | 9119 | { |
a6d9a66e | 9120 | struct gdbarch *gdbarch = get_current_arch (); |
44feb3ce | 9121 | int tempflag; |
f7f9143b | 9122 | struct symtab_and_line sal; |
f7f9143b JB |
9123 | char *addr_string = NULL; |
9124 | char *exp_string = NULL; | |
9125 | char *cond_string = NULL; | |
9126 | struct expression *cond = NULL; | |
9127 | struct breakpoint_ops *ops = NULL; | |
9128 | ||
44feb3ce TT |
9129 | tempflag = get_cmd_context (command) == CATCH_TEMPORARY; |
9130 | ||
9131 | if (!arg) | |
9132 | arg = ""; | |
f7f9143b JB |
9133 | sal = ada_decode_exception_location (arg, &addr_string, &exp_string, |
9134 | &cond_string, &cond, &ops); | |
a6d9a66e | 9135 | create_ada_exception_breakpoint (gdbarch, sal, addr_string, exp_string, |
f7f9143b JB |
9136 | cond_string, cond, ops, tempflag, |
9137 | from_tty); | |
9138 | } | |
9139 | ||
a96d9b2e SDJ |
9140 | /* Cleanup function for a syscall filter list. */ |
9141 | static void | |
9142 | clean_up_filters (void *arg) | |
9143 | { | |
9144 | VEC(int) *iter = *(VEC(int) **) arg; | |
9145 | VEC_free (int, iter); | |
9146 | } | |
9147 | ||
9148 | /* Splits the argument using space as delimiter. Returns an xmalloc'd | |
9149 | filter list, or NULL if no filtering is required. */ | |
9150 | static VEC(int) * | |
9151 | catch_syscall_split_args (char *arg) | |
9152 | { | |
9153 | VEC(int) *result = NULL; | |
9154 | struct cleanup *cleanup = make_cleanup (clean_up_filters, &result); | |
9155 | ||
9156 | while (*arg != '\0') | |
9157 | { | |
9158 | int i, syscall_number; | |
9159 | char *endptr; | |
9160 | char cur_name[128]; | |
9161 | struct syscall s; | |
9162 | ||
9163 | /* Skip whitespace. */ | |
9164 | while (isspace (*arg)) | |
9165 | arg++; | |
9166 | ||
9167 | for (i = 0; i < 127 && arg[i] && !isspace (arg[i]); ++i) | |
9168 | cur_name[i] = arg[i]; | |
9169 | cur_name[i] = '\0'; | |
9170 | arg += i; | |
9171 | ||
9172 | /* Check if the user provided a syscall name or a number. */ | |
9173 | syscall_number = (int) strtol (cur_name, &endptr, 0); | |
9174 | if (*endptr == '\0') | |
bccd0dd2 | 9175 | get_syscall_by_number (syscall_number, &s); |
a96d9b2e SDJ |
9176 | else |
9177 | { | |
9178 | /* We have a name. Let's check if it's valid and convert it | |
9179 | to a number. */ | |
9180 | get_syscall_by_name (cur_name, &s); | |
9181 | ||
9182 | if (s.number == UNKNOWN_SYSCALL) | |
4a64f543 MS |
9183 | /* Here we have to issue an error instead of a warning, |
9184 | because GDB cannot do anything useful if there's no | |
9185 | syscall number to be caught. */ | |
a96d9b2e SDJ |
9186 | error (_("Unknown syscall name '%s'."), cur_name); |
9187 | } | |
9188 | ||
9189 | /* Ok, it's valid. */ | |
9190 | VEC_safe_push (int, result, s.number); | |
9191 | } | |
9192 | ||
9193 | discard_cleanups (cleanup); | |
9194 | return result; | |
9195 | } | |
9196 | ||
9197 | /* Implement the "catch syscall" command. */ | |
9198 | ||
9199 | static void | |
cc59ec59 MS |
9200 | catch_syscall_command_1 (char *arg, int from_tty, |
9201 | struct cmd_list_element *command) | |
a96d9b2e SDJ |
9202 | { |
9203 | int tempflag; | |
9204 | VEC(int) *filter; | |
9205 | struct syscall s; | |
9206 | struct gdbarch *gdbarch = get_current_arch (); | |
9207 | ||
9208 | /* Checking if the feature if supported. */ | |
9209 | if (gdbarch_get_syscall_number_p (gdbarch) == 0) | |
9210 | error (_("The feature 'catch syscall' is not supported on \ | |
9211 | this architeture yet.")); | |
9212 | ||
9213 | tempflag = get_cmd_context (command) == CATCH_TEMPORARY; | |
9214 | ||
9215 | ep_skip_leading_whitespace (&arg); | |
9216 | ||
9217 | /* We need to do this first "dummy" translation in order | |
9218 | to get the syscall XML file loaded or, most important, | |
9219 | to display a warning to the user if there's no XML file | |
9220 | for his/her architecture. */ | |
9221 | get_syscall_by_number (0, &s); | |
9222 | ||
9223 | /* The allowed syntax is: | |
9224 | catch syscall | |
9225 | catch syscall <name | number> [<name | number> ... <name | number>] | |
9226 | ||
9227 | Let's check if there's a syscall name. */ | |
9228 | ||
9229 | if (arg != NULL) | |
9230 | filter = catch_syscall_split_args (arg); | |
9231 | else | |
9232 | filter = NULL; | |
9233 | ||
9234 | create_syscall_event_catchpoint (tempflag, filter, | |
9235 | &catch_syscall_breakpoint_ops); | |
9236 | } | |
9237 | ||
f7f9143b JB |
9238 | /* Implement the "catch assert" command. */ |
9239 | ||
9240 | static void | |
3e43a32a MS |
9241 | catch_assert_command (char *arg, int from_tty, |
9242 | struct cmd_list_element *command) | |
f7f9143b | 9243 | { |
a6d9a66e | 9244 | struct gdbarch *gdbarch = get_current_arch (); |
44feb3ce | 9245 | int tempflag; |
f7f9143b JB |
9246 | struct symtab_and_line sal; |
9247 | char *addr_string = NULL; | |
9248 | struct breakpoint_ops *ops = NULL; | |
9249 | ||
44feb3ce TT |
9250 | tempflag = get_cmd_context (command) == CATCH_TEMPORARY; |
9251 | ||
9252 | if (!arg) | |
9253 | arg = ""; | |
f7f9143b | 9254 | sal = ada_decode_assert_location (arg, &addr_string, &ops); |
a6d9a66e UW |
9255 | create_ada_exception_breakpoint (gdbarch, sal, addr_string, NULL, NULL, NULL, |
9256 | ops, tempflag, from_tty); | |
f7f9143b JB |
9257 | } |
9258 | ||
c906108c | 9259 | static void |
fba45db2 | 9260 | catch_command (char *arg, int from_tty) |
c906108c | 9261 | { |
44feb3ce | 9262 | error (_("Catch requires an event name.")); |
c906108c SS |
9263 | } |
9264 | \f | |
9265 | ||
9266 | static void | |
fba45db2 | 9267 | tcatch_command (char *arg, int from_tty) |
c906108c | 9268 | { |
44feb3ce | 9269 | error (_("Catch requires an event name.")); |
c906108c SS |
9270 | } |
9271 | ||
80f8a6eb | 9272 | /* Delete breakpoints by address or line. */ |
c906108c SS |
9273 | |
9274 | static void | |
fba45db2 | 9275 | clear_command (char *arg, int from_tty) |
c906108c | 9276 | { |
d6e956e5 VP |
9277 | struct breakpoint *b; |
9278 | VEC(breakpoint_p) *found = 0; | |
9279 | int ix; | |
c906108c SS |
9280 | int default_match; |
9281 | struct symtabs_and_lines sals; | |
9282 | struct symtab_and_line sal; | |
c906108c SS |
9283 | int i; |
9284 | ||
9285 | if (arg) | |
9286 | { | |
9287 | sals = decode_line_spec (arg, 1); | |
9288 | default_match = 0; | |
9289 | } | |
9290 | else | |
9291 | { | |
c5aa993b | 9292 | sals.sals = (struct symtab_and_line *) |
c906108c | 9293 | xmalloc (sizeof (struct symtab_and_line)); |
80f8a6eb | 9294 | make_cleanup (xfree, sals.sals); |
4a64f543 | 9295 | init_sal (&sal); /* Initialize to zeroes. */ |
c906108c SS |
9296 | sal.line = default_breakpoint_line; |
9297 | sal.symtab = default_breakpoint_symtab; | |
9298 | sal.pc = default_breakpoint_address; | |
6c95b8df | 9299 | sal.pspace = default_breakpoint_pspace; |
c906108c | 9300 | if (sal.symtab == 0) |
8a3fe4f8 | 9301 | error (_("No source file specified.")); |
c906108c SS |
9302 | |
9303 | sals.sals[0] = sal; | |
9304 | sals.nelts = 1; | |
9305 | ||
9306 | default_match = 1; | |
9307 | } | |
9308 | ||
4a64f543 MS |
9309 | /* We don't call resolve_sal_pc here. That's not as bad as it |
9310 | seems, because all existing breakpoints typically have both | |
9311 | file/line and pc set. So, if clear is given file/line, we can | |
9312 | match this to existing breakpoint without obtaining pc at all. | |
ed0616c6 VP |
9313 | |
9314 | We only support clearing given the address explicitly | |
9315 | present in breakpoint table. Say, we've set breakpoint | |
4a64f543 | 9316 | at file:line. There were several PC values for that file:line, |
ed0616c6 | 9317 | due to optimization, all in one block. |
4a64f543 MS |
9318 | |
9319 | We've picked one PC value. If "clear" is issued with another | |
ed0616c6 VP |
9320 | PC corresponding to the same file:line, the breakpoint won't |
9321 | be cleared. We probably can still clear the breakpoint, but | |
9322 | since the other PC value is never presented to user, user | |
9323 | can only find it by guessing, and it does not seem important | |
9324 | to support that. */ | |
9325 | ||
4a64f543 MS |
9326 | /* For each line spec given, delete bps which correspond to it. Do |
9327 | it in two passes, solely to preserve the current behavior that | |
9328 | from_tty is forced true if we delete more than one | |
9329 | breakpoint. */ | |
c906108c | 9330 | |
80f8a6eb | 9331 | found = NULL; |
c906108c SS |
9332 | for (i = 0; i < sals.nelts; i++) |
9333 | { | |
9334 | /* If exact pc given, clear bpts at that pc. | |
c5aa993b JM |
9335 | If line given (pc == 0), clear all bpts on specified line. |
9336 | If defaulting, clear all bpts on default line | |
c906108c | 9337 | or at default pc. |
c5aa993b JM |
9338 | |
9339 | defaulting sal.pc != 0 tests to do | |
9340 | ||
9341 | 0 1 pc | |
9342 | 1 1 pc _and_ line | |
9343 | 0 0 line | |
9344 | 1 0 <can't happen> */ | |
c906108c SS |
9345 | |
9346 | sal = sals.sals[i]; | |
c906108c | 9347 | |
4a64f543 | 9348 | /* Find all matching breakpoints and add them to 'found'. */ |
d6e956e5 | 9349 | ALL_BREAKPOINTS (b) |
c5aa993b | 9350 | { |
0d381245 | 9351 | int match = 0; |
4a64f543 | 9352 | /* Are we going to delete b? */ |
cc60f2e3 | 9353 | if (b->type != bp_none && !is_watchpoint (b)) |
0d381245 VP |
9354 | { |
9355 | struct bp_location *loc = b->loc; | |
9356 | for (; loc; loc = loc->next) | |
9357 | { | |
6c95b8df PA |
9358 | int pc_match = sal.pc |
9359 | && (loc->pspace == sal.pspace) | |
0d381245 VP |
9360 | && (loc->address == sal.pc) |
9361 | && (!section_is_overlay (loc->section) | |
9362 | || loc->section == sal.section); | |
9363 | int line_match = ((default_match || (0 == sal.pc)) | |
9364 | && b->source_file != NULL | |
9365 | && sal.symtab != NULL | |
6c95b8df | 9366 | && sal.pspace == loc->pspace |
3e43a32a MS |
9367 | && strcmp (b->source_file, |
9368 | sal.symtab->filename) == 0 | |
0d381245 VP |
9369 | && b->line_number == sal.line); |
9370 | if (pc_match || line_match) | |
9371 | { | |
9372 | match = 1; | |
9373 | break; | |
9374 | } | |
9375 | } | |
9376 | } | |
9377 | ||
9378 | if (match) | |
d6e956e5 | 9379 | VEC_safe_push(breakpoint_p, found, b); |
c906108c | 9380 | } |
80f8a6eb MS |
9381 | } |
9382 | /* Now go thru the 'found' chain and delete them. */ | |
d6e956e5 | 9383 | if (VEC_empty(breakpoint_p, found)) |
80f8a6eb MS |
9384 | { |
9385 | if (arg) | |
8a3fe4f8 | 9386 | error (_("No breakpoint at %s."), arg); |
80f8a6eb | 9387 | else |
8a3fe4f8 | 9388 | error (_("No breakpoint at this line.")); |
80f8a6eb | 9389 | } |
c906108c | 9390 | |
d6e956e5 | 9391 | if (VEC_length(breakpoint_p, found) > 1) |
4a64f543 | 9392 | from_tty = 1; /* Always report if deleted more than one. */ |
80f8a6eb | 9393 | if (from_tty) |
a3f17187 | 9394 | { |
d6e956e5 | 9395 | if (VEC_length(breakpoint_p, found) == 1) |
a3f17187 AC |
9396 | printf_unfiltered (_("Deleted breakpoint ")); |
9397 | else | |
9398 | printf_unfiltered (_("Deleted breakpoints ")); | |
9399 | } | |
80f8a6eb | 9400 | breakpoints_changed (); |
d6e956e5 VP |
9401 | |
9402 | for (ix = 0; VEC_iterate(breakpoint_p, found, ix, b); ix++) | |
80f8a6eb | 9403 | { |
c5aa993b | 9404 | if (from_tty) |
d6e956e5 VP |
9405 | printf_unfiltered ("%d ", b->number); |
9406 | delete_breakpoint (b); | |
c906108c | 9407 | } |
80f8a6eb MS |
9408 | if (from_tty) |
9409 | putchar_unfiltered ('\n'); | |
c906108c SS |
9410 | } |
9411 | \f | |
9412 | /* Delete breakpoint in BS if they are `delete' breakpoints and | |
9413 | all breakpoints that are marked for deletion, whether hit or not. | |
9414 | This is called after any breakpoint is hit, or after errors. */ | |
9415 | ||
9416 | void | |
fba45db2 | 9417 | breakpoint_auto_delete (bpstat bs) |
c906108c | 9418 | { |
35df4500 | 9419 | struct breakpoint *b, *b_tmp; |
c906108c SS |
9420 | |
9421 | for (; bs; bs = bs->next) | |
f431efe5 PA |
9422 | if (bs->breakpoint_at |
9423 | && bs->breakpoint_at->disposition == disp_del | |
c906108c | 9424 | && bs->stop) |
f431efe5 | 9425 | delete_breakpoint (bs->breakpoint_at); |
c906108c | 9426 | |
35df4500 | 9427 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
c5aa993b | 9428 | { |
b5de0fa7 | 9429 | if (b->disposition == disp_del_at_next_stop) |
c5aa993b JM |
9430 | delete_breakpoint (b); |
9431 | } | |
c906108c SS |
9432 | } |
9433 | ||
4a64f543 MS |
9434 | /* A comparison function for bp_location AP and BP being interfaced to |
9435 | qsort. Sort elements primarily by their ADDRESS (no matter what | |
9436 | does breakpoint_address_is_meaningful say for its OWNER), | |
9437 | secondarily by ordering first bp_permanent OWNERed elements and | |
9438 | terciarily just ensuring the array is sorted stable way despite | |
9439 | qsort being an instable algorithm. */ | |
876fa593 JK |
9440 | |
9441 | static int | |
494cfb0f | 9442 | bp_location_compare (const void *ap, const void *bp) |
876fa593 | 9443 | { |
494cfb0f JK |
9444 | struct bp_location *a = *(void **) ap; |
9445 | struct bp_location *b = *(void **) bp; | |
2bdf28a0 | 9446 | /* A and B come from existing breakpoints having non-NULL OWNER. */ |
876fa593 JK |
9447 | int a_perm = a->owner->enable_state == bp_permanent; |
9448 | int b_perm = b->owner->enable_state == bp_permanent; | |
9449 | ||
9450 | if (a->address != b->address) | |
9451 | return (a->address > b->address) - (a->address < b->address); | |
9452 | ||
9453 | /* Sort permanent breakpoints first. */ | |
9454 | if (a_perm != b_perm) | |
9455 | return (a_perm < b_perm) - (a_perm > b_perm); | |
9456 | ||
4a64f543 MS |
9457 | /* Make the user-visible order stable across GDB runs. Locations of |
9458 | the same breakpoint can be sorted in arbitrary order. */ | |
876fa593 JK |
9459 | |
9460 | if (a->owner->number != b->owner->number) | |
9461 | return (a->owner->number > b->owner->number) | |
9462 | - (a->owner->number < b->owner->number); | |
9463 | ||
9464 | return (a > b) - (a < b); | |
9465 | } | |
9466 | ||
876fa593 | 9467 | /* Set bp_location_placed_address_before_address_max and |
4a64f543 MS |
9468 | bp_location_shadow_len_after_address_max according to the current |
9469 | content of the bp_location array. */ | |
f7545552 TT |
9470 | |
9471 | static void | |
876fa593 | 9472 | bp_location_target_extensions_update (void) |
f7545552 | 9473 | { |
876fa593 JK |
9474 | struct bp_location *bl, **blp_tmp; |
9475 | ||
9476 | bp_location_placed_address_before_address_max = 0; | |
9477 | bp_location_shadow_len_after_address_max = 0; | |
9478 | ||
9479 | ALL_BP_LOCATIONS (bl, blp_tmp) | |
9480 | { | |
9481 | CORE_ADDR start, end, addr; | |
9482 | ||
9483 | if (!bp_location_has_shadow (bl)) | |
9484 | continue; | |
9485 | ||
9486 | start = bl->target_info.placed_address; | |
9487 | end = start + bl->target_info.shadow_len; | |
9488 | ||
9489 | gdb_assert (bl->address >= start); | |
9490 | addr = bl->address - start; | |
9491 | if (addr > bp_location_placed_address_before_address_max) | |
9492 | bp_location_placed_address_before_address_max = addr; | |
9493 | ||
9494 | /* Zero SHADOW_LEN would not pass bp_location_has_shadow. */ | |
9495 | ||
9496 | gdb_assert (bl->address < end); | |
9497 | addr = end - bl->address; | |
9498 | if (addr > bp_location_shadow_len_after_address_max) | |
9499 | bp_location_shadow_len_after_address_max = addr; | |
9500 | } | |
f7545552 TT |
9501 | } |
9502 | ||
4cd9bd08 | 9503 | /* If SHOULD_INSERT is false, do not insert any breakpoint locations |
b60e7edf PA |
9504 | into the inferior, only remove already-inserted locations that no |
9505 | longer should be inserted. Functions that delete a breakpoint or | |
9506 | breakpoints should pass false, so that deleting a breakpoint | |
9507 | doesn't have the side effect of inserting the locations of other | |
9508 | breakpoints that are marked not-inserted, but should_be_inserted | |
9509 | returns true on them. | |
9510 | ||
9511 | This behaviour is useful is situations close to tear-down -- e.g., | |
9512 | after an exec, while the target still has execution, but breakpoint | |
9513 | shadows of the previous executable image should *NOT* be restored | |
9514 | to the new image; or before detaching, where the target still has | |
9515 | execution and wants to delete breakpoints from GDB's lists, and all | |
9516 | breakpoints had already been removed from the inferior. */ | |
9517 | ||
0d381245 | 9518 | static void |
b60e7edf | 9519 | update_global_location_list (int should_insert) |
0d381245 | 9520 | { |
74960c60 | 9521 | struct breakpoint *b; |
876fa593 | 9522 | struct bp_location **locp, *loc; |
f7545552 TT |
9523 | struct cleanup *cleanups; |
9524 | ||
2d134ed3 PA |
9525 | /* Used in the duplicates detection below. When iterating over all |
9526 | bp_locations, points to the first bp_location of a given address. | |
9527 | Breakpoints and watchpoints of different types are never | |
9528 | duplicates of each other. Keep one pointer for each type of | |
9529 | breakpoint/watchpoint, so we only need to loop over all locations | |
9530 | once. */ | |
9531 | struct bp_location *bp_loc_first; /* breakpoint */ | |
9532 | struct bp_location *wp_loc_first; /* hardware watchpoint */ | |
9533 | struct bp_location *awp_loc_first; /* access watchpoint */ | |
9534 | struct bp_location *rwp_loc_first; /* read watchpoint */ | |
876fa593 | 9535 | |
4a64f543 MS |
9536 | /* Saved former bp_location array which we compare against the newly |
9537 | built bp_location from the current state of ALL_BREAKPOINTS. */ | |
876fa593 JK |
9538 | struct bp_location **old_location, **old_locp; |
9539 | unsigned old_location_count; | |
9540 | ||
9541 | old_location = bp_location; | |
9542 | old_location_count = bp_location_count; | |
9543 | bp_location = NULL; | |
9544 | bp_location_count = 0; | |
9545 | cleanups = make_cleanup (xfree, old_location); | |
0d381245 | 9546 | |
74960c60 | 9547 | ALL_BREAKPOINTS (b) |
876fa593 JK |
9548 | for (loc = b->loc; loc; loc = loc->next) |
9549 | bp_location_count++; | |
9550 | ||
9551 | bp_location = xmalloc (sizeof (*bp_location) * bp_location_count); | |
9552 | locp = bp_location; | |
9553 | ALL_BREAKPOINTS (b) | |
9554 | for (loc = b->loc; loc; loc = loc->next) | |
9555 | *locp++ = loc; | |
9556 | qsort (bp_location, bp_location_count, sizeof (*bp_location), | |
494cfb0f | 9557 | bp_location_compare); |
876fa593 JK |
9558 | |
9559 | bp_location_target_extensions_update (); | |
74960c60 | 9560 | |
4a64f543 MS |
9561 | /* Identify bp_location instances that are no longer present in the |
9562 | new list, and therefore should be freed. Note that it's not | |
9563 | necessary that those locations should be removed from inferior -- | |
9564 | if there's another location at the same address (previously | |
9565 | marked as duplicate), we don't need to remove/insert the | |
9566 | location. | |
876fa593 | 9567 | |
4a64f543 MS |
9568 | LOCP is kept in sync with OLD_LOCP, each pointing to the current |
9569 | and former bp_location array state respectively. */ | |
876fa593 JK |
9570 | |
9571 | locp = bp_location; | |
9572 | for (old_locp = old_location; old_locp < old_location + old_location_count; | |
9573 | old_locp++) | |
74960c60 | 9574 | { |
876fa593 | 9575 | struct bp_location *old_loc = *old_locp; |
c7d46a38 | 9576 | struct bp_location **loc2p; |
876fa593 | 9577 | |
4a64f543 MS |
9578 | /* Tells if 'old_loc' is found amoung the new locations. If |
9579 | not, we have to free it. */ | |
c7d46a38 | 9580 | int found_object = 0; |
20874c92 VP |
9581 | /* Tells if the location should remain inserted in the target. */ |
9582 | int keep_in_target = 0; | |
9583 | int removed = 0; | |
876fa593 | 9584 | |
4a64f543 MS |
9585 | /* Skip LOCP entries which will definitely never be needed. |
9586 | Stop either at or being the one matching OLD_LOC. */ | |
876fa593 | 9587 | while (locp < bp_location + bp_location_count |
c7d46a38 | 9588 | && (*locp)->address < old_loc->address) |
876fa593 | 9589 | locp++; |
c7d46a38 PA |
9590 | |
9591 | for (loc2p = locp; | |
9592 | (loc2p < bp_location + bp_location_count | |
9593 | && (*loc2p)->address == old_loc->address); | |
9594 | loc2p++) | |
9595 | { | |
9596 | if (*loc2p == old_loc) | |
9597 | { | |
9598 | found_object = 1; | |
9599 | break; | |
9600 | } | |
9601 | } | |
74960c60 | 9602 | |
4a64f543 MS |
9603 | /* If this location is no longer present, and inserted, look if |
9604 | there's maybe a new location at the same address. If so, | |
9605 | mark that one inserted, and don't remove this one. This is | |
9606 | needed so that we don't have a time window where a breakpoint | |
9607 | at certain location is not inserted. */ | |
74960c60 | 9608 | |
876fa593 | 9609 | if (old_loc->inserted) |
0d381245 | 9610 | { |
4a64f543 MS |
9611 | /* If the location is inserted now, we might have to remove |
9612 | it. */ | |
74960c60 | 9613 | |
876fa593 | 9614 | if (found_object && should_be_inserted (old_loc)) |
74960c60 | 9615 | { |
4a64f543 MS |
9616 | /* The location is still present in the location list, |
9617 | and still should be inserted. Don't do anything. */ | |
20874c92 | 9618 | keep_in_target = 1; |
74960c60 VP |
9619 | } |
9620 | else | |
9621 | { | |
4a64f543 MS |
9622 | /* The location is either no longer present, or got |
9623 | disabled. See if there's another location at the | |
9624 | same address, in which case we don't need to remove | |
9625 | this one from the target. */ | |
876fa593 | 9626 | |
2bdf28a0 | 9627 | /* OLD_LOC comes from existing struct breakpoint. */ |
876fa593 JK |
9628 | if (breakpoint_address_is_meaningful (old_loc->owner)) |
9629 | { | |
876fa593 | 9630 | for (loc2p = locp; |
c7d46a38 PA |
9631 | (loc2p < bp_location + bp_location_count |
9632 | && (*loc2p)->address == old_loc->address); | |
876fa593 JK |
9633 | loc2p++) |
9634 | { | |
9635 | struct bp_location *loc2 = *loc2p; | |
9636 | ||
2d134ed3 | 9637 | if (breakpoint_locations_match (loc2, old_loc)) |
c7d46a38 PA |
9638 | { |
9639 | /* For the sake of should_be_inserted. | |
4a64f543 MS |
9640 | Duplicates check below will fix up this |
9641 | later. */ | |
c7d46a38 | 9642 | loc2->duplicate = 0; |
85d721b8 PA |
9643 | |
9644 | /* Read watchpoint locations are switched to | |
9645 | access watchpoints, if the former are not | |
9646 | supported, but the latter are. */ | |
9647 | if (is_hardware_watchpoint (old_loc->owner)) | |
9648 | { | |
9649 | gdb_assert (is_hardware_watchpoint (loc2->owner)); | |
9650 | loc2->watchpoint_type = old_loc->watchpoint_type; | |
9651 | } | |
9652 | ||
c7d46a38 PA |
9653 | if (loc2 != old_loc && should_be_inserted (loc2)) |
9654 | { | |
9655 | loc2->inserted = 1; | |
9656 | loc2->target_info = old_loc->target_info; | |
9657 | keep_in_target = 1; | |
9658 | break; | |
9659 | } | |
876fa593 JK |
9660 | } |
9661 | } | |
9662 | } | |
74960c60 VP |
9663 | } |
9664 | ||
20874c92 VP |
9665 | if (!keep_in_target) |
9666 | { | |
876fa593 | 9667 | if (remove_breakpoint (old_loc, mark_uninserted)) |
20874c92 | 9668 | { |
4a64f543 MS |
9669 | /* This is just about all we can do. We could keep |
9670 | this location on the global list, and try to | |
9671 | remove it next time, but there's no particular | |
9672 | reason why we will succeed next time. | |
20874c92 | 9673 | |
4a64f543 MS |
9674 | Note that at this point, old_loc->owner is still |
9675 | valid, as delete_breakpoint frees the breakpoint | |
9676 | only after calling us. */ | |
3e43a32a MS |
9677 | printf_filtered (_("warning: Error removing " |
9678 | "breakpoint %d\n"), | |
876fa593 | 9679 | old_loc->owner->number); |
20874c92 VP |
9680 | } |
9681 | removed = 1; | |
9682 | } | |
0d381245 | 9683 | } |
74960c60 VP |
9684 | |
9685 | if (!found_object) | |
1c5cfe86 | 9686 | { |
db82e815 PA |
9687 | if (removed && non_stop |
9688 | && breakpoint_address_is_meaningful (old_loc->owner) | |
9689 | && !is_hardware_watchpoint (old_loc->owner)) | |
20874c92 | 9690 | { |
db82e815 PA |
9691 | /* This location was removed from the target. In |
9692 | non-stop mode, a race condition is possible where | |
9693 | we've removed a breakpoint, but stop events for that | |
9694 | breakpoint are already queued and will arrive later. | |
9695 | We apply an heuristic to be able to distinguish such | |
9696 | SIGTRAPs from other random SIGTRAPs: we keep this | |
9697 | breakpoint location for a bit, and will retire it | |
9698 | after we see some number of events. The theory here | |
9699 | is that reporting of events should, "on the average", | |
9700 | be fair, so after a while we'll see events from all | |
9701 | threads that have anything of interest, and no longer | |
9702 | need to keep this breakpoint location around. We | |
9703 | don't hold locations forever so to reduce chances of | |
9704 | mistaking a non-breakpoint SIGTRAP for a breakpoint | |
9705 | SIGTRAP. | |
9706 | ||
9707 | The heuristic failing can be disastrous on | |
9708 | decr_pc_after_break targets. | |
9709 | ||
9710 | On decr_pc_after_break targets, like e.g., x86-linux, | |
9711 | if we fail to recognize a late breakpoint SIGTRAP, | |
9712 | because events_till_retirement has reached 0 too | |
9713 | soon, we'll fail to do the PC adjustment, and report | |
9714 | a random SIGTRAP to the user. When the user resumes | |
9715 | the inferior, it will most likely immediately crash | |
2dec564e | 9716 | with SIGILL/SIGBUS/SIGSEGV, or worse, get silently |
db82e815 PA |
9717 | corrupted, because of being resumed e.g., in the |
9718 | middle of a multi-byte instruction, or skipped a | |
9719 | one-byte instruction. This was actually seen happen | |
9720 | on native x86-linux, and should be less rare on | |
9721 | targets that do not support new thread events, like | |
9722 | remote, due to the heuristic depending on | |
9723 | thread_count. | |
9724 | ||
9725 | Mistaking a random SIGTRAP for a breakpoint trap | |
9726 | causes similar symptoms (PC adjustment applied when | |
9727 | it shouldn't), but then again, playing with SIGTRAPs | |
9728 | behind the debugger's back is asking for trouble. | |
9729 | ||
9730 | Since hardware watchpoint traps are always | |
9731 | distinguishable from other traps, so we don't need to | |
9732 | apply keep hardware watchpoint moribund locations | |
9733 | around. We simply always ignore hardware watchpoint | |
9734 | traps we can no longer explain. */ | |
9735 | ||
876fa593 JK |
9736 | old_loc->events_till_retirement = 3 * (thread_count () + 1); |
9737 | old_loc->owner = NULL; | |
20874c92 | 9738 | |
876fa593 | 9739 | VEC_safe_push (bp_location_p, moribund_locations, old_loc); |
1c5cfe86 PA |
9740 | } |
9741 | else | |
f431efe5 PA |
9742 | { |
9743 | old_loc->owner = NULL; | |
9744 | decref_bp_location (&old_loc); | |
9745 | } | |
20874c92 | 9746 | } |
74960c60 | 9747 | } |
1c5cfe86 | 9748 | |
2d134ed3 PA |
9749 | /* Rescan breakpoints at the same address and section, marking the |
9750 | first one as "first" and any others as "duplicates". This is so | |
9751 | that the bpt instruction is only inserted once. If we have a | |
9752 | permanent breakpoint at the same place as BPT, make that one the | |
9753 | official one, and the rest as duplicates. Permanent breakpoints | |
9754 | are sorted first for the same address. | |
9755 | ||
9756 | Do the same for hardware watchpoints, but also considering the | |
9757 | watchpoint's type (regular/access/read) and length. */ | |
876fa593 | 9758 | |
2d134ed3 PA |
9759 | bp_loc_first = NULL; |
9760 | wp_loc_first = NULL; | |
9761 | awp_loc_first = NULL; | |
9762 | rwp_loc_first = NULL; | |
876fa593 | 9763 | ALL_BP_LOCATIONS (loc, locp) |
74960c60 | 9764 | { |
4a64f543 MS |
9765 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always |
9766 | non-NULL. */ | |
876fa593 | 9767 | struct breakpoint *b = loc->owner; |
2d134ed3 | 9768 | struct bp_location **loc_first_p; |
876fa593 JK |
9769 | |
9770 | if (b->enable_state == bp_disabled | |
9771 | || b->enable_state == bp_call_disabled | |
9772 | || b->enable_state == bp_startup_disabled | |
9773 | || !loc->enabled | |
9774 | || loc->shlib_disabled | |
15c3d785 | 9775 | || !breakpoint_address_is_meaningful (b) |
d77f58be | 9776 | || is_tracepoint (b)) |
876fa593 JK |
9777 | continue; |
9778 | ||
9779 | /* Permanent breakpoint should always be inserted. */ | |
9780 | if (b->enable_state == bp_permanent && ! loc->inserted) | |
9781 | internal_error (__FILE__, __LINE__, | |
9782 | _("allegedly permanent breakpoint is not " | |
9783 | "actually inserted")); | |
9784 | ||
2d134ed3 PA |
9785 | if (b->type == bp_hardware_watchpoint) |
9786 | loc_first_p = &wp_loc_first; | |
9787 | else if (b->type == bp_read_watchpoint) | |
9788 | loc_first_p = &rwp_loc_first; | |
9789 | else if (b->type == bp_access_watchpoint) | |
9790 | loc_first_p = &awp_loc_first; | |
9791 | else | |
9792 | loc_first_p = &bp_loc_first; | |
9793 | ||
9794 | if (*loc_first_p == NULL | |
9795 | || (overlay_debugging && loc->section != (*loc_first_p)->section) | |
9796 | || !breakpoint_locations_match (loc, *loc_first_p)) | |
876fa593 | 9797 | { |
2d134ed3 | 9798 | *loc_first_p = loc; |
876fa593 JK |
9799 | loc->duplicate = 0; |
9800 | continue; | |
9801 | } | |
9802 | ||
9803 | loc->duplicate = 1; | |
9804 | ||
2d134ed3 PA |
9805 | if ((*loc_first_p)->owner->enable_state == bp_permanent && loc->inserted |
9806 | && b->enable_state != bp_permanent) | |
876fa593 JK |
9807 | internal_error (__FILE__, __LINE__, |
9808 | _("another breakpoint was inserted on top of " | |
9809 | "a permanent breakpoint")); | |
0d381245 | 9810 | } |
74960c60 | 9811 | |
50c71eaf | 9812 | if (breakpoints_always_inserted_mode () && should_insert |
c35b1492 | 9813 | && (have_live_inferiors () |
2567c7d9 | 9814 | || (gdbarch_has_global_breakpoints (target_gdbarch)))) |
74960c60 | 9815 | insert_breakpoint_locations (); |
f7545552 TT |
9816 | |
9817 | do_cleanups (cleanups); | |
74960c60 VP |
9818 | } |
9819 | ||
20874c92 VP |
9820 | void |
9821 | breakpoint_retire_moribund (void) | |
9822 | { | |
9823 | struct bp_location *loc; | |
9824 | int ix; | |
9825 | ||
9826 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, loc); ++ix) | |
9827 | if (--(loc->events_till_retirement) == 0) | |
9828 | { | |
f431efe5 | 9829 | decref_bp_location (&loc); |
20874c92 VP |
9830 | VEC_unordered_remove (bp_location_p, moribund_locations, ix); |
9831 | --ix; | |
9832 | } | |
9833 | } | |
9834 | ||
74960c60 | 9835 | static void |
b60e7edf | 9836 | update_global_location_list_nothrow (int inserting) |
74960c60 VP |
9837 | { |
9838 | struct gdb_exception e; | |
cc59ec59 | 9839 | |
74960c60 | 9840 | TRY_CATCH (e, RETURN_MASK_ERROR) |
b60e7edf | 9841 | update_global_location_list (inserting); |
0d381245 VP |
9842 | } |
9843 | ||
f431efe5 PA |
9844 | /* Clear BKP from a BPS. */ |
9845 | ||
a474d7c2 | 9846 | static void |
f431efe5 | 9847 | bpstat_remove_bp_location (bpstat bps, struct breakpoint *bpt) |
a474d7c2 PA |
9848 | { |
9849 | bpstat bs; | |
cc59ec59 | 9850 | |
a474d7c2 | 9851 | for (bs = bps; bs; bs = bs->next) |
f431efe5 | 9852 | if (bs->breakpoint_at == bpt) |
a474d7c2 PA |
9853 | { |
9854 | bs->breakpoint_at = NULL; | |
9855 | bs->old_val = NULL; | |
9856 | /* bs->commands will be freed later. */ | |
9857 | } | |
9858 | } | |
9859 | ||
9860 | /* Callback for iterate_over_threads. */ | |
9861 | static int | |
f431efe5 | 9862 | bpstat_remove_breakpoint_callback (struct thread_info *th, void *data) |
a474d7c2 | 9863 | { |
f431efe5 | 9864 | struct breakpoint *bpt = data; |
cc59ec59 | 9865 | |
16c381f0 | 9866 | bpstat_remove_bp_location (th->control.stop_bpstat, bpt); |
a474d7c2 PA |
9867 | return 0; |
9868 | } | |
9869 | ||
53a5351d | 9870 | /* Delete a breakpoint and clean up all traces of it in the data |
f431efe5 | 9871 | structures. */ |
c906108c SS |
9872 | |
9873 | void | |
fba45db2 | 9874 | delete_breakpoint (struct breakpoint *bpt) |
c906108c | 9875 | { |
52f0bd74 | 9876 | struct breakpoint *b; |
c906108c | 9877 | |
8a3fe4f8 | 9878 | gdb_assert (bpt != NULL); |
c906108c | 9879 | |
4a64f543 MS |
9880 | /* Has this bp already been deleted? This can happen because |
9881 | multiple lists can hold pointers to bp's. bpstat lists are | |
9882 | especial culprits. | |
9883 | ||
9884 | One example of this happening is a watchpoint's scope bp. When | |
9885 | the scope bp triggers, we notice that the watchpoint is out of | |
9886 | scope, and delete it. We also delete its scope bp. But the | |
9887 | scope bp is marked "auto-deleting", and is already on a bpstat. | |
9888 | That bpstat is then checked for auto-deleting bp's, which are | |
9889 | deleted. | |
9890 | ||
9891 | A real solution to this problem might involve reference counts in | |
9892 | bp's, and/or giving them pointers back to their referencing | |
9893 | bpstat's, and teaching delete_breakpoint to only free a bp's | |
9894 | storage when no more references were extent. A cheaper bandaid | |
9895 | was chosen. */ | |
c906108c SS |
9896 | if (bpt->type == bp_none) |
9897 | return; | |
9898 | ||
4a64f543 MS |
9899 | /* At least avoid this stale reference until the reference counting |
9900 | of breakpoints gets resolved. */ | |
e5a0a904 JK |
9901 | if (bpt->related_breakpoint != NULL) |
9902 | { | |
9903 | gdb_assert (bpt->related_breakpoint->related_breakpoint == bpt); | |
9904 | bpt->related_breakpoint->disposition = disp_del_at_next_stop; | |
9905 | bpt->related_breakpoint->related_breakpoint = NULL; | |
9906 | bpt->related_breakpoint = NULL; | |
9907 | } | |
9908 | ||
383f836e | 9909 | observer_notify_breakpoint_deleted (bpt->number); |
c906108c | 9910 | |
c906108c SS |
9911 | if (breakpoint_chain == bpt) |
9912 | breakpoint_chain = bpt->next; | |
9913 | ||
c906108c SS |
9914 | ALL_BREAKPOINTS (b) |
9915 | if (b->next == bpt) | |
c5aa993b JM |
9916 | { |
9917 | b->next = bpt->next; | |
9918 | break; | |
9919 | } | |
c906108c | 9920 | |
9add0f1b | 9921 | decref_counted_command_line (&bpt->commands); |
60e1c644 PA |
9922 | xfree (bpt->cond_string); |
9923 | xfree (bpt->cond_exp); | |
9924 | xfree (bpt->addr_string); | |
9925 | xfree (bpt->exp); | |
9926 | xfree (bpt->exp_string); | |
d63d0675 | 9927 | xfree (bpt->exp_string_reparse); |
60e1c644 PA |
9928 | value_free (bpt->val); |
9929 | xfree (bpt->source_file); | |
9930 | xfree (bpt->exec_pathname); | |
a96d9b2e | 9931 | clean_up_filters (&bpt->syscalls_to_be_caught); |
c906108c | 9932 | |
f431efe5 PA |
9933 | |
9934 | /* Be sure no bpstat's are pointing at the breakpoint after it's | |
9935 | been freed. */ | |
9936 | /* FIXME, how can we find all bpstat's? We just check stop_bpstat | |
9937 | in all threeds for now. Note that we cannot just remove bpstats | |
9938 | pointing at bpt from the stop_bpstat list entirely, as breakpoint | |
9939 | commands are associated with the bpstat; if we remove it here, | |
9940 | then the later call to bpstat_do_actions (&stop_bpstat); in | |
9941 | event-top.c won't do anything, and temporary breakpoints with | |
9942 | commands won't work. */ | |
9943 | ||
9944 | iterate_over_threads (bpstat_remove_breakpoint_callback, bpt); | |
9945 | ||
4a64f543 MS |
9946 | /* Now that breakpoint is removed from breakpoint list, update the |
9947 | global location list. This will remove locations that used to | |
9948 | belong to this breakpoint. Do this before freeing the breakpoint | |
9949 | itself, since remove_breakpoint looks at location's owner. It | |
9950 | might be better design to have location completely | |
9951 | self-contained, but it's not the case now. */ | |
b60e7edf | 9952 | update_global_location_list (0); |
74960c60 VP |
9953 | |
9954 | ||
4a64f543 MS |
9955 | /* On the chance that someone will soon try again to delete this |
9956 | same bp, we mark it as deleted before freeing its storage. */ | |
c906108c SS |
9957 | bpt->type = bp_none; |
9958 | ||
b8c9b27d | 9959 | xfree (bpt); |
c906108c SS |
9960 | } |
9961 | ||
4d6140d9 AC |
9962 | static void |
9963 | do_delete_breakpoint_cleanup (void *b) | |
9964 | { | |
9965 | delete_breakpoint (b); | |
9966 | } | |
9967 | ||
9968 | struct cleanup * | |
9969 | make_cleanup_delete_breakpoint (struct breakpoint *b) | |
9970 | { | |
9971 | return make_cleanup (do_delete_breakpoint_cleanup, b); | |
9972 | } | |
9973 | ||
95a42b64 TT |
9974 | /* A callback for map_breakpoint_numbers that calls |
9975 | delete_breakpoint. */ | |
9976 | ||
9977 | static void | |
9978 | do_delete_breakpoint (struct breakpoint *b, void *ignore) | |
9979 | { | |
9980 | delete_breakpoint (b); | |
9981 | } | |
9982 | ||
c906108c | 9983 | void |
fba45db2 | 9984 | delete_command (char *arg, int from_tty) |
c906108c | 9985 | { |
35df4500 | 9986 | struct breakpoint *b, *b_tmp; |
c906108c | 9987 | |
ea9365bb TT |
9988 | dont_repeat (); |
9989 | ||
c906108c SS |
9990 | if (arg == 0) |
9991 | { | |
9992 | int breaks_to_delete = 0; | |
9993 | ||
9994 | /* Delete all breakpoints if no argument. | |
4a64f543 MS |
9995 | Do not delete internal or call-dummy breakpoints, these have |
9996 | to be deleted with an explicit breakpoint number argument. */ | |
c5aa993b JM |
9997 | ALL_BREAKPOINTS (b) |
9998 | { | |
059fb39f | 9999 | if (b->type != bp_call_dummy |
aa7d318d | 10000 | && b->type != bp_std_terminate |
059fb39f | 10001 | && b->type != bp_shlib_event |
4efc6507 | 10002 | && b->type != bp_jit_event |
059fb39f PM |
10003 | && b->type != bp_thread_event |
10004 | && b->type != bp_overlay_event | |
0fd8e87f | 10005 | && b->type != bp_longjmp_master |
aa7d318d | 10006 | && b->type != bp_std_terminate_master |
186c406b | 10007 | && b->type != bp_exception_master |
059fb39f | 10008 | && b->number >= 0) |
973d738b DJ |
10009 | { |
10010 | breaks_to_delete = 1; | |
10011 | break; | |
10012 | } | |
c5aa993b | 10013 | } |
c906108c SS |
10014 | |
10015 | /* Ask user only if there are some breakpoints to delete. */ | |
10016 | if (!from_tty | |
e2e0b3e5 | 10017 | || (breaks_to_delete && query (_("Delete all breakpoints? ")))) |
c906108c | 10018 | { |
35df4500 | 10019 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
c5aa993b | 10020 | { |
059fb39f | 10021 | if (b->type != bp_call_dummy |
aa7d318d | 10022 | && b->type != bp_std_terminate |
059fb39f PM |
10023 | && b->type != bp_shlib_event |
10024 | && b->type != bp_thread_event | |
4efc6507 | 10025 | && b->type != bp_jit_event |
059fb39f | 10026 | && b->type != bp_overlay_event |
0fd8e87f | 10027 | && b->type != bp_longjmp_master |
aa7d318d | 10028 | && b->type != bp_std_terminate_master |
186c406b | 10029 | && b->type != bp_exception_master |
059fb39f | 10030 | && b->number >= 0) |
c5aa993b JM |
10031 | delete_breakpoint (b); |
10032 | } | |
c906108c SS |
10033 | } |
10034 | } | |
10035 | else | |
95a42b64 | 10036 | map_breakpoint_numbers (arg, do_delete_breakpoint, NULL); |
c906108c SS |
10037 | } |
10038 | ||
0d381245 VP |
10039 | static int |
10040 | all_locations_are_pending (struct bp_location *loc) | |
fe3f5fa8 | 10041 | { |
0d381245 VP |
10042 | for (; loc; loc = loc->next) |
10043 | if (!loc->shlib_disabled) | |
10044 | return 0; | |
10045 | return 1; | |
fe3f5fa8 VP |
10046 | } |
10047 | ||
776592bf DE |
10048 | /* Subroutine of update_breakpoint_locations to simplify it. |
10049 | Return non-zero if multiple fns in list LOC have the same name. | |
10050 | Null names are ignored. */ | |
10051 | ||
10052 | static int | |
10053 | ambiguous_names_p (struct bp_location *loc) | |
10054 | { | |
10055 | struct bp_location *l; | |
10056 | htab_t htab = htab_create_alloc (13, htab_hash_string, | |
cc59ec59 MS |
10057 | (int (*) (const void *, |
10058 | const void *)) streq, | |
776592bf DE |
10059 | NULL, xcalloc, xfree); |
10060 | ||
10061 | for (l = loc; l != NULL; l = l->next) | |
10062 | { | |
10063 | const char **slot; | |
10064 | const char *name = l->function_name; | |
10065 | ||
10066 | /* Allow for some names to be NULL, ignore them. */ | |
10067 | if (name == NULL) | |
10068 | continue; | |
10069 | ||
10070 | slot = (const char **) htab_find_slot (htab, (const void *) name, | |
10071 | INSERT); | |
4a64f543 MS |
10072 | /* NOTE: We can assume slot != NULL here because xcalloc never |
10073 | returns NULL. */ | |
776592bf DE |
10074 | if (*slot != NULL) |
10075 | { | |
10076 | htab_delete (htab); | |
10077 | return 1; | |
10078 | } | |
10079 | *slot = name; | |
10080 | } | |
10081 | ||
10082 | htab_delete (htab); | |
10083 | return 0; | |
10084 | } | |
10085 | ||
0fb4aa4b PA |
10086 | /* When symbols change, it probably means the sources changed as well, |
10087 | and it might mean the static tracepoint markers are no longer at | |
10088 | the same address or line numbers they used to be at last we | |
10089 | checked. Losing your static tracepoints whenever you rebuild is | |
10090 | undesirable. This function tries to resync/rematch gdb static | |
10091 | tracepoints with the markers on the target, for static tracepoints | |
10092 | that have not been set by marker id. Static tracepoint that have | |
10093 | been set by marker id are reset by marker id in breakpoint_re_set. | |
10094 | The heuristic is: | |
10095 | ||
10096 | 1) For a tracepoint set at a specific address, look for a marker at | |
10097 | the old PC. If one is found there, assume to be the same marker. | |
10098 | If the name / string id of the marker found is different from the | |
10099 | previous known name, assume that means the user renamed the marker | |
10100 | in the sources, and output a warning. | |
10101 | ||
10102 | 2) For a tracepoint set at a given line number, look for a marker | |
10103 | at the new address of the old line number. If one is found there, | |
10104 | assume to be the same marker. If the name / string id of the | |
10105 | marker found is different from the previous known name, assume that | |
10106 | means the user renamed the marker in the sources, and output a | |
10107 | warning. | |
10108 | ||
10109 | 3) If a marker is no longer found at the same address or line, it | |
10110 | may mean the marker no longer exists. But it may also just mean | |
10111 | the code changed a bit. Maybe the user added a few lines of code | |
10112 | that made the marker move up or down (in line number terms). Ask | |
10113 | the target for info about the marker with the string id as we knew | |
10114 | it. If found, update line number and address in the matching | |
10115 | static tracepoint. This will get confused if there's more than one | |
10116 | marker with the same ID (possible in UST, although unadvised | |
10117 | precisely because it confuses tools). */ | |
10118 | ||
10119 | static struct symtab_and_line | |
10120 | update_static_tracepoint (struct breakpoint *b, struct symtab_and_line sal) | |
10121 | { | |
10122 | struct static_tracepoint_marker marker; | |
10123 | CORE_ADDR pc; | |
10124 | int i; | |
10125 | ||
10126 | pc = sal.pc; | |
10127 | if (sal.line) | |
10128 | find_line_pc (sal.symtab, sal.line, &pc); | |
10129 | ||
10130 | if (target_static_tracepoint_marker_at (pc, &marker)) | |
10131 | { | |
10132 | if (strcmp (b->static_trace_marker_id, marker.str_id) != 0) | |
10133 | warning (_("static tracepoint %d changed probed marker from %s to %s"), | |
10134 | b->number, | |
10135 | b->static_trace_marker_id, marker.str_id); | |
10136 | ||
10137 | xfree (b->static_trace_marker_id); | |
10138 | b->static_trace_marker_id = xstrdup (marker.str_id); | |
10139 | release_static_tracepoint_marker (&marker); | |
10140 | ||
10141 | return sal; | |
10142 | } | |
10143 | ||
10144 | /* Old marker wasn't found on target at lineno. Try looking it up | |
10145 | by string ID. */ | |
10146 | if (!sal.explicit_pc | |
10147 | && sal.line != 0 | |
10148 | && sal.symtab != NULL | |
10149 | && b->static_trace_marker_id != NULL) | |
10150 | { | |
10151 | VEC(static_tracepoint_marker_p) *markers; | |
10152 | ||
10153 | markers | |
10154 | = target_static_tracepoint_markers_by_strid (b->static_trace_marker_id); | |
10155 | ||
10156 | if (!VEC_empty(static_tracepoint_marker_p, markers)) | |
10157 | { | |
10158 | struct symtab_and_line sal; | |
10159 | struct symbol *sym; | |
10160 | struct static_tracepoint_marker *marker; | |
10161 | ||
10162 | marker = VEC_index (static_tracepoint_marker_p, markers, 0); | |
10163 | ||
10164 | xfree (b->static_trace_marker_id); | |
10165 | b->static_trace_marker_id = xstrdup (marker->str_id); | |
10166 | ||
10167 | warning (_("marker for static tracepoint %d (%s) not " | |
10168 | "found at previous line number"), | |
10169 | b->number, b->static_trace_marker_id); | |
10170 | ||
10171 | init_sal (&sal); | |
10172 | ||
10173 | sal.pc = marker->address; | |
10174 | ||
10175 | sal = find_pc_line (marker->address, 0); | |
10176 | sym = find_pc_sect_function (marker->address, NULL); | |
10177 | ui_out_text (uiout, "Now in "); | |
10178 | if (sym) | |
10179 | { | |
10180 | ui_out_field_string (uiout, "func", | |
10181 | SYMBOL_PRINT_NAME (sym)); | |
10182 | ui_out_text (uiout, " at "); | |
10183 | } | |
10184 | ui_out_field_string (uiout, "file", sal.symtab->filename); | |
10185 | ui_out_text (uiout, ":"); | |
10186 | ||
10187 | if (ui_out_is_mi_like_p (uiout)) | |
10188 | { | |
10189 | char *fullname = symtab_to_fullname (sal.symtab); | |
10190 | ||
10191 | if (fullname) | |
10192 | ui_out_field_string (uiout, "fullname", fullname); | |
10193 | } | |
10194 | ||
10195 | ui_out_field_int (uiout, "line", sal.line); | |
10196 | ui_out_text (uiout, "\n"); | |
10197 | ||
10198 | b->line_number = sal.line; | |
10199 | ||
10200 | xfree (b->source_file); | |
10201 | if (sym) | |
10202 | b->source_file = xstrdup (sal.symtab->filename); | |
10203 | else | |
10204 | b->source_file = NULL; | |
10205 | ||
10206 | xfree (b->addr_string); | |
10207 | b->addr_string = xstrprintf ("%s:%d", | |
10208 | sal.symtab->filename, b->line_number); | |
10209 | ||
10210 | /* Might be nice to check if function changed, and warn if | |
10211 | so. */ | |
10212 | ||
10213 | release_static_tracepoint_marker (marker); | |
10214 | } | |
10215 | } | |
10216 | return sal; | |
10217 | } | |
10218 | ||
fe3f5fa8 | 10219 | static void |
0d381245 VP |
10220 | update_breakpoint_locations (struct breakpoint *b, |
10221 | struct symtabs_and_lines sals) | |
fe3f5fa8 VP |
10222 | { |
10223 | int i; | |
10224 | char *s; | |
0d381245 VP |
10225 | struct bp_location *existing_locations = b->loc; |
10226 | ||
4a64f543 MS |
10227 | /* If there's no new locations, and all existing locations are |
10228 | pending, don't do anything. This optimizes the common case where | |
10229 | all locations are in the same shared library, that was unloaded. | |
10230 | We'd like to retain the location, so that when the library is | |
10231 | loaded again, we don't loose the enabled/disabled status of the | |
10232 | individual locations. */ | |
0d381245 | 10233 | if (all_locations_are_pending (existing_locations) && sals.nelts == 0) |
fe3f5fa8 VP |
10234 | return; |
10235 | ||
fe3f5fa8 VP |
10236 | b->loc = NULL; |
10237 | ||
0d381245 | 10238 | for (i = 0; i < sals.nelts; ++i) |
fe3f5fa8 | 10239 | { |
0d381245 | 10240 | struct bp_location *new_loc = |
39d61571 | 10241 | add_location_to_breakpoint (b, &(sals.sals[i])); |
fe3f5fa8 | 10242 | |
0d381245 VP |
10243 | /* Reparse conditions, they might contain references to the |
10244 | old symtab. */ | |
10245 | if (b->cond_string != NULL) | |
10246 | { | |
10247 | struct gdb_exception e; | |
fe3f5fa8 | 10248 | |
0d381245 VP |
10249 | s = b->cond_string; |
10250 | TRY_CATCH (e, RETURN_MASK_ERROR) | |
10251 | { | |
10252 | new_loc->cond = parse_exp_1 (&s, block_for_pc (sals.sals[i].pc), | |
10253 | 0); | |
10254 | } | |
10255 | if (e.reason < 0) | |
10256 | { | |
3e43a32a MS |
10257 | warning (_("failed to reevaluate condition " |
10258 | "for breakpoint %d: %s"), | |
0d381245 VP |
10259 | b->number, e.message); |
10260 | new_loc->enabled = 0; | |
10261 | } | |
10262 | } | |
fe3f5fa8 | 10263 | |
0d381245 VP |
10264 | if (b->source_file != NULL) |
10265 | xfree (b->source_file); | |
10266 | if (sals.sals[i].symtab == NULL) | |
10267 | b->source_file = NULL; | |
10268 | else | |
1b36a34b | 10269 | b->source_file = xstrdup (sals.sals[i].symtab->filename); |
fe3f5fa8 | 10270 | |
0d381245 VP |
10271 | if (b->line_number == 0) |
10272 | b->line_number = sals.sals[i].line; | |
10273 | } | |
fe3f5fa8 | 10274 | |
514f746b AR |
10275 | /* Update locations of permanent breakpoints. */ |
10276 | if (b->enable_state == bp_permanent) | |
10277 | make_breakpoint_permanent (b); | |
10278 | ||
4a64f543 MS |
10279 | /* If possible, carry over 'disable' status from existing |
10280 | breakpoints. */ | |
0d381245 VP |
10281 | { |
10282 | struct bp_location *e = existing_locations; | |
776592bf DE |
10283 | /* If there are multiple breakpoints with the same function name, |
10284 | e.g. for inline functions, comparing function names won't work. | |
10285 | Instead compare pc addresses; this is just a heuristic as things | |
10286 | may have moved, but in practice it gives the correct answer | |
10287 | often enough until a better solution is found. */ | |
10288 | int have_ambiguous_names = ambiguous_names_p (b->loc); | |
10289 | ||
0d381245 VP |
10290 | for (; e; e = e->next) |
10291 | { | |
10292 | if (!e->enabled && e->function_name) | |
10293 | { | |
10294 | struct bp_location *l = b->loc; | |
776592bf DE |
10295 | if (have_ambiguous_names) |
10296 | { | |
10297 | for (; l; l = l->next) | |
6c95b8df PA |
10298 | if (breakpoint_address_match (e->pspace->aspace, e->address, |
10299 | l->pspace->aspace, l->address)) | |
776592bf DE |
10300 | { |
10301 | l->enabled = 0; | |
10302 | break; | |
10303 | } | |
10304 | } | |
10305 | else | |
10306 | { | |
10307 | for (; l; l = l->next) | |
10308 | if (l->function_name | |
10309 | && strcmp (e->function_name, l->function_name) == 0) | |
10310 | { | |
10311 | l->enabled = 0; | |
10312 | break; | |
10313 | } | |
10314 | } | |
0d381245 VP |
10315 | } |
10316 | } | |
10317 | } | |
fe3f5fa8 | 10318 | |
b60e7edf | 10319 | update_global_location_list (1); |
fe3f5fa8 VP |
10320 | } |
10321 | ||
c906108c SS |
10322 | /* Reset a breakpoint given it's struct breakpoint * BINT. |
10323 | The value we return ends up being the return value from catch_errors. | |
10324 | Unused in this case. */ | |
10325 | ||
10326 | static int | |
4efb68b1 | 10327 | breakpoint_re_set_one (void *bint) |
c906108c | 10328 | { |
4a64f543 | 10329 | /* Get past catch_errs. */ |
53a5351d | 10330 | struct breakpoint *b = (struct breakpoint *) bint; |
fe3f5fa8 VP |
10331 | int not_found = 0; |
10332 | int *not_found_ptr = ¬_found; | |
6c95b8df PA |
10333 | struct symtabs_and_lines sals = {0}; |
10334 | struct symtabs_and_lines expanded = {0}; | |
c906108c | 10335 | char *s; |
fe3f5fa8 | 10336 | struct gdb_exception e; |
6c95b8df | 10337 | struct cleanup *cleanups = make_cleanup (null_cleanup, NULL); |
0fb4aa4b | 10338 | int marker_spec = 0; |
c906108c SS |
10339 | |
10340 | switch (b->type) | |
10341 | { | |
10342 | case bp_none: | |
8a3fe4f8 | 10343 | warning (_("attempted to reset apparently deleted breakpoint #%d?"), |
53a5351d | 10344 | b->number); |
c906108c SS |
10345 | return 0; |
10346 | case bp_breakpoint: | |
10347 | case bp_hardware_breakpoint: | |
1042e4c0 | 10348 | case bp_tracepoint: |
7a697b8d | 10349 | case bp_fast_tracepoint: |
0fb4aa4b | 10350 | case bp_static_tracepoint: |
8bea4e01 UW |
10351 | /* Do not attempt to re-set breakpoints disabled during startup. */ |
10352 | if (b->enable_state == bp_startup_disabled) | |
10353 | return 0; | |
10354 | ||
c906108c SS |
10355 | if (b->addr_string == NULL) |
10356 | { | |
4a64f543 | 10357 | /* Anything without a string can't be re-set. */ |
c906108c SS |
10358 | delete_breakpoint (b); |
10359 | return 0; | |
10360 | } | |
c906108c | 10361 | |
c906108c SS |
10362 | input_radix = b->input_radix; |
10363 | s = b->addr_string; | |
6c95b8df PA |
10364 | |
10365 | save_current_space_and_thread (); | |
10366 | switch_to_program_space_and_thread (b->pspace); | |
10367 | ||
0fb4aa4b PA |
10368 | marker_spec = b->type == bp_static_tracepoint && is_marker_spec (s); |
10369 | ||
385d04dc | 10370 | set_language (b->language); |
fe3f5fa8 | 10371 | TRY_CATCH (e, RETURN_MASK_ERROR) |
c906108c | 10372 | { |
0fb4aa4b PA |
10373 | if (marker_spec) |
10374 | { | |
10375 | sals = decode_static_tracepoint_spec (&s); | |
10376 | if (sals.nelts > b->static_trace_marker_id_idx) | |
10377 | { | |
10378 | sals.sals[0] = sals.sals[b->static_trace_marker_id_idx]; | |
10379 | sals.nelts = 1; | |
10380 | } | |
10381 | else | |
10382 | error (_("marker %s not found"), b->static_trace_marker_id); | |
10383 | } | |
10384 | else | |
3e43a32a MS |
10385 | sals = decode_line_1 (&s, 1, (struct symtab *) NULL, 0, |
10386 | (char ***) NULL, not_found_ptr); | |
fe3f5fa8 VP |
10387 | } |
10388 | if (e.reason < 0) | |
10389 | { | |
10390 | int not_found_and_ok = 0; | |
4a64f543 MS |
10391 | /* For pending breakpoints, it's expected that parsing will |
10392 | fail until the right shared library is loaded. User has | |
10393 | already told to create pending breakpoints and don't need | |
10394 | extra messages. If breakpoint is in bp_shlib_disabled | |
10395 | state, then user already saw the message about that | |
10396 | breakpoint being disabled, and don't want to see more | |
10397 | errors. */ | |
0d381245 VP |
10398 | if (not_found |
10399 | && (b->condition_not_parsed | |
10400 | || (b->loc && b->loc->shlib_disabled) | |
10401 | || b->enable_state == bp_disabled)) | |
fe3f5fa8 VP |
10402 | not_found_and_ok = 1; |
10403 | ||
10404 | if (!not_found_and_ok) | |
c906108c | 10405 | { |
fe3f5fa8 VP |
10406 | /* We surely don't want to warn about the same breakpoint |
10407 | 10 times. One solution, implemented here, is disable | |
10408 | the breakpoint on error. Another solution would be to | |
10409 | have separate 'warning emitted' flag. Since this | |
10410 | happens only when a binary has changed, I don't know | |
10411 | which approach is better. */ | |
10412 | b->enable_state = bp_disabled; | |
10413 | throw_exception (e); | |
c906108c | 10414 | } |
fe3f5fa8 | 10415 | } |
c906108c | 10416 | |
6c95b8df | 10417 | if (!not_found) |
fe3f5fa8 | 10418 | { |
6c95b8df PA |
10419 | gdb_assert (sals.nelts == 1); |
10420 | ||
10421 | resolve_sal_pc (&sals.sals[0]); | |
10422 | if (b->condition_not_parsed && s && s[0]) | |
10423 | { | |
10424 | char *cond_string = 0; | |
10425 | int thread = -1; | |
10426 | int task = 0; | |
10427 | ||
10428 | find_condition_and_thread (s, sals.sals[0].pc, | |
10429 | &cond_string, &thread, &task); | |
10430 | if (cond_string) | |
10431 | b->cond_string = cond_string; | |
10432 | b->thread = thread; | |
10433 | b->task = task; | |
10434 | b->condition_not_parsed = 0; | |
10435 | } | |
10436 | ||
0fb4aa4b PA |
10437 | if (b->type == bp_static_tracepoint && !marker_spec) |
10438 | sals.sals[0] = update_static_tracepoint (b, sals.sals[0]); | |
10439 | ||
6c95b8df | 10440 | expanded = expand_line_sal_maybe (sals.sals[0]); |
fe3f5fa8 | 10441 | } |
6c95b8df PA |
10442 | |
10443 | make_cleanup (xfree, sals.sals); | |
ed0616c6 | 10444 | update_breakpoint_locations (b, expanded); |
c906108c SS |
10445 | break; |
10446 | ||
10447 | case bp_watchpoint: | |
10448 | case bp_hardware_watchpoint: | |
10449 | case bp_read_watchpoint: | |
10450 | case bp_access_watchpoint: | |
4a64f543 MS |
10451 | /* Watchpoint can be either on expression using entirely global |
10452 | variables, or it can be on local variables. | |
10453 | ||
10454 | Watchpoints of the first kind are never auto-deleted, and | |
10455 | even persist across program restarts. Since they can use | |
10456 | variables from shared libraries, we need to reparse | |
10457 | expression as libraries are loaded and unloaded. | |
10458 | ||
10459 | Watchpoints on local variables can also change meaning as | |
10460 | result of solib event. For example, if a watchpoint uses | |
10461 | both a local and a global variables in expression, it's a | |
10462 | local watchpoint, but unloading of a shared library will make | |
10463 | the expression invalid. This is not a very common use case, | |
10464 | but we still re-evaluate expression, to avoid surprises to | |
10465 | the user. | |
0b3de036 VP |
10466 | |
10467 | Note that for local watchpoints, we re-evaluate it only if | |
10468 | watchpoints frame id is still valid. If it's not, it means | |
4a64f543 MS |
10469 | the watchpoint is out of scope and will be deleted soon. In |
10470 | fact, I'm not sure we'll ever be called in this case. | |
0b3de036 VP |
10471 | |
10472 | If a local watchpoint's frame id is still valid, then | |
4a64f543 | 10473 | b->exp_valid_block is likewise valid, and we can safely use it. |
0b3de036 VP |
10474 | |
10475 | Don't do anything about disabled watchpoints, since they will | |
10476 | be reevaluated again when enabled. */ | |
a5606eee | 10477 | update_watchpoint (b, 1 /* reparse */); |
c906108c | 10478 | break; |
c5aa993b JM |
10479 | /* We needn't really do anything to reset these, since the mask |
10480 | that requests them is unaffected by e.g., new libraries being | |
4a64f543 | 10481 | loaded. */ |
ce78b96d | 10482 | case bp_catchpoint: |
c906108c | 10483 | break; |
c5aa993b | 10484 | |
c906108c | 10485 | default: |
a3f17187 | 10486 | printf_filtered (_("Deleting unknown breakpoint type %d\n"), b->type); |
c906108c | 10487 | /* fall through */ |
0fd8e87f UW |
10488 | /* Delete overlay event and longjmp master breakpoints; they will be |
10489 | reset later by breakpoint_re_set. */ | |
1900040c | 10490 | case bp_overlay_event: |
0fd8e87f | 10491 | case bp_longjmp_master: |
aa7d318d | 10492 | case bp_std_terminate_master: |
186c406b | 10493 | case bp_exception_master: |
c906108c SS |
10494 | delete_breakpoint (b); |
10495 | break; | |
10496 | ||
c5aa993b JM |
10497 | /* This breakpoint is special, it's set up when the inferior |
10498 | starts and we really don't want to touch it. */ | |
c906108c SS |
10499 | case bp_shlib_event: |
10500 | ||
c4093a6a JM |
10501 | /* Like bp_shlib_event, this breakpoint type is special. |
10502 | Once it is set up, we do not want to touch it. */ | |
10503 | case bp_thread_event: | |
10504 | ||
4a64f543 MS |
10505 | /* Keep temporary breakpoints, which can be encountered when we |
10506 | step over a dlopen call and SOLIB_ADD is resetting the | |
10507 | breakpoints. Otherwise these should have been blown away via | |
10508 | the cleanup chain or by breakpoint_init_inferior when we | |
10509 | rerun the executable. */ | |
c906108c SS |
10510 | case bp_until: |
10511 | case bp_finish: | |
10512 | case bp_watchpoint_scope: | |
10513 | case bp_call_dummy: | |
aa7d318d | 10514 | case bp_std_terminate: |
c906108c | 10515 | case bp_step_resume: |
611c83ae PA |
10516 | case bp_longjmp: |
10517 | case bp_longjmp_resume: | |
186c406b TT |
10518 | case bp_exception: |
10519 | case bp_exception_resume: | |
4efc6507 | 10520 | case bp_jit_event: |
c906108c SS |
10521 | break; |
10522 | } | |
10523 | ||
6c95b8df | 10524 | do_cleanups (cleanups); |
c906108c SS |
10525 | return 0; |
10526 | } | |
10527 | ||
69de3c6a | 10528 | /* Re-set all breakpoints after symbols have been re-loaded. */ |
c906108c | 10529 | void |
69de3c6a | 10530 | breakpoint_re_set (void) |
c906108c | 10531 | { |
35df4500 | 10532 | struct breakpoint *b, *b_tmp; |
c906108c SS |
10533 | enum language save_language; |
10534 | int save_input_radix; | |
6c95b8df | 10535 | struct cleanup *old_chain; |
c5aa993b | 10536 | |
c906108c SS |
10537 | save_language = current_language->la_language; |
10538 | save_input_radix = input_radix; | |
6c95b8df PA |
10539 | old_chain = save_current_program_space (); |
10540 | ||
35df4500 | 10541 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
c5aa993b | 10542 | { |
4a64f543 | 10543 | /* Format possible error msg. */ |
fe3f5fa8 | 10544 | char *message = xstrprintf ("Error in re-setting breakpoint %d: ", |
9ebf4acf AC |
10545 | b->number); |
10546 | struct cleanup *cleanups = make_cleanup (xfree, message); | |
c5aa993b | 10547 | catch_errors (breakpoint_re_set_one, b, message, RETURN_MASK_ALL); |
9ebf4acf | 10548 | do_cleanups (cleanups); |
c5aa993b | 10549 | } |
c906108c SS |
10550 | set_language (save_language); |
10551 | input_radix = save_input_radix; | |
e62c965a | 10552 | |
0756c555 | 10553 | jit_breakpoint_re_set (); |
4efc6507 | 10554 | |
6c95b8df PA |
10555 | do_cleanups (old_chain); |
10556 | ||
69de3c6a | 10557 | create_overlay_event_breakpoint ("_ovly_debug_event"); |
0fd8e87f UW |
10558 | create_longjmp_master_breakpoint ("longjmp"); |
10559 | create_longjmp_master_breakpoint ("_longjmp"); | |
10560 | create_longjmp_master_breakpoint ("siglongjmp"); | |
10561 | create_longjmp_master_breakpoint ("_siglongjmp"); | |
aa7d318d | 10562 | create_std_terminate_master_breakpoint ("std::terminate()"); |
186c406b | 10563 | create_exception_master_breakpoint (); |
c906108c SS |
10564 | } |
10565 | \f | |
c906108c SS |
10566 | /* Reset the thread number of this breakpoint: |
10567 | ||
10568 | - If the breakpoint is for all threads, leave it as-is. | |
4a64f543 | 10569 | - Else, reset it to the current thread for inferior_ptid. */ |
c906108c | 10570 | void |
fba45db2 | 10571 | breakpoint_re_set_thread (struct breakpoint *b) |
c906108c SS |
10572 | { |
10573 | if (b->thread != -1) | |
10574 | { | |
39f77062 KB |
10575 | if (in_thread_list (inferior_ptid)) |
10576 | b->thread = pid_to_thread_id (inferior_ptid); | |
6c95b8df PA |
10577 | |
10578 | /* We're being called after following a fork. The new fork is | |
10579 | selected as current, and unless this was a vfork will have a | |
10580 | different program space from the original thread. Reset that | |
10581 | as well. */ | |
10582 | b->loc->pspace = current_program_space; | |
c906108c SS |
10583 | } |
10584 | } | |
10585 | ||
03ac34d5 MS |
10586 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. |
10587 | If from_tty is nonzero, it prints a message to that effect, | |
10588 | which ends with a period (no newline). */ | |
10589 | ||
c906108c | 10590 | void |
fba45db2 | 10591 | set_ignore_count (int bptnum, int count, int from_tty) |
c906108c | 10592 | { |
52f0bd74 | 10593 | struct breakpoint *b; |
c906108c SS |
10594 | |
10595 | if (count < 0) | |
10596 | count = 0; | |
10597 | ||
10598 | ALL_BREAKPOINTS (b) | |
10599 | if (b->number == bptnum) | |
c5aa993b | 10600 | { |
d77f58be SS |
10601 | if (is_tracepoint (b)) |
10602 | { | |
10603 | if (from_tty && count != 0) | |
10604 | printf_filtered (_("Ignore count ignored for tracepoint %d."), | |
10605 | bptnum); | |
10606 | return; | |
10607 | } | |
10608 | ||
c5aa993b | 10609 | b->ignore_count = count; |
221ea385 KS |
10610 | if (from_tty) |
10611 | { | |
10612 | if (count == 0) | |
3e43a32a MS |
10613 | printf_filtered (_("Will stop next time " |
10614 | "breakpoint %d is reached."), | |
221ea385 KS |
10615 | bptnum); |
10616 | else if (count == 1) | |
a3f17187 | 10617 | printf_filtered (_("Will ignore next crossing of breakpoint %d."), |
221ea385 KS |
10618 | bptnum); |
10619 | else | |
3e43a32a MS |
10620 | printf_filtered (_("Will ignore next %d " |
10621 | "crossings of breakpoint %d."), | |
221ea385 KS |
10622 | count, bptnum); |
10623 | } | |
c5aa993b | 10624 | breakpoints_changed (); |
383f836e | 10625 | observer_notify_breakpoint_modified (b->number); |
c5aa993b JM |
10626 | return; |
10627 | } | |
c906108c | 10628 | |
8a3fe4f8 | 10629 | error (_("No breakpoint number %d."), bptnum); |
c906108c SS |
10630 | } |
10631 | ||
b2175913 MS |
10632 | void |
10633 | make_breakpoint_silent (struct breakpoint *b) | |
10634 | { | |
10635 | /* Silence the breakpoint. */ | |
10636 | b->silent = 1; | |
10637 | } | |
10638 | ||
c906108c SS |
10639 | /* Command to set ignore-count of breakpoint N to COUNT. */ |
10640 | ||
10641 | static void | |
fba45db2 | 10642 | ignore_command (char *args, int from_tty) |
c906108c SS |
10643 | { |
10644 | char *p = args; | |
52f0bd74 | 10645 | int num; |
c906108c SS |
10646 | |
10647 | if (p == 0) | |
e2e0b3e5 | 10648 | error_no_arg (_("a breakpoint number")); |
c5aa993b | 10649 | |
c906108c | 10650 | num = get_number (&p); |
5c44784c | 10651 | if (num == 0) |
8a3fe4f8 | 10652 | error (_("bad breakpoint number: '%s'"), args); |
c906108c | 10653 | if (*p == 0) |
8a3fe4f8 | 10654 | error (_("Second argument (specified ignore-count) is missing.")); |
c906108c SS |
10655 | |
10656 | set_ignore_count (num, | |
10657 | longest_to_int (value_as_long (parse_and_eval (p))), | |
10658 | from_tty); | |
221ea385 KS |
10659 | if (from_tty) |
10660 | printf_filtered ("\n"); | |
c906108c SS |
10661 | } |
10662 | \f | |
10663 | /* Call FUNCTION on each of the breakpoints | |
10664 | whose numbers are given in ARGS. */ | |
10665 | ||
10666 | static void | |
95a42b64 TT |
10667 | map_breakpoint_numbers (char *args, void (*function) (struct breakpoint *, |
10668 | void *), | |
10669 | void *data) | |
c906108c | 10670 | { |
52f0bd74 | 10671 | char *p = args; |
c906108c | 10672 | char *p1; |
52f0bd74 AC |
10673 | int num; |
10674 | struct breakpoint *b, *tmp; | |
11cf8741 | 10675 | int match; |
c906108c SS |
10676 | |
10677 | if (p == 0) | |
e2e0b3e5 | 10678 | error_no_arg (_("one or more breakpoint numbers")); |
c906108c SS |
10679 | |
10680 | while (*p) | |
10681 | { | |
11cf8741 | 10682 | match = 0; |
c906108c | 10683 | p1 = p; |
c5aa993b | 10684 | |
5c44784c JM |
10685 | num = get_number_or_range (&p1); |
10686 | if (num == 0) | |
c5aa993b | 10687 | { |
8a3fe4f8 | 10688 | warning (_("bad breakpoint number at or near '%s'"), p); |
5c44784c JM |
10689 | } |
10690 | else | |
10691 | { | |
10692 | ALL_BREAKPOINTS_SAFE (b, tmp) | |
10693 | if (b->number == num) | |
10694 | { | |
10695 | struct breakpoint *related_breakpoint = b->related_breakpoint; | |
11cf8741 | 10696 | match = 1; |
95a42b64 | 10697 | function (b, data); |
5c44784c | 10698 | if (related_breakpoint) |
95a42b64 | 10699 | function (related_breakpoint, data); |
11cf8741 | 10700 | break; |
5c44784c | 10701 | } |
11cf8741 | 10702 | if (match == 0) |
a3f17187 | 10703 | printf_unfiltered (_("No breakpoint number %d.\n"), num); |
c5aa993b | 10704 | } |
c906108c SS |
10705 | p = p1; |
10706 | } | |
10707 | } | |
10708 | ||
0d381245 VP |
10709 | static struct bp_location * |
10710 | find_location_by_number (char *number) | |
10711 | { | |
10712 | char *dot = strchr (number, '.'); | |
10713 | char *p1; | |
10714 | int bp_num; | |
10715 | int loc_num; | |
10716 | struct breakpoint *b; | |
10717 | struct bp_location *loc; | |
10718 | ||
10719 | *dot = '\0'; | |
10720 | ||
10721 | p1 = number; | |
10722 | bp_num = get_number_or_range (&p1); | |
10723 | if (bp_num == 0) | |
10724 | error (_("Bad breakpoint number '%s'"), number); | |
10725 | ||
10726 | ALL_BREAKPOINTS (b) | |
10727 | if (b->number == bp_num) | |
10728 | { | |
10729 | break; | |
10730 | } | |
10731 | ||
10732 | if (!b || b->number != bp_num) | |
10733 | error (_("Bad breakpoint number '%s'"), number); | |
10734 | ||
10735 | p1 = dot+1; | |
10736 | loc_num = get_number_or_range (&p1); | |
10737 | if (loc_num == 0) | |
10738 | error (_("Bad breakpoint location number '%s'"), number); | |
10739 | ||
10740 | --loc_num; | |
10741 | loc = b->loc; | |
10742 | for (;loc_num && loc; --loc_num, loc = loc->next) | |
10743 | ; | |
10744 | if (!loc) | |
10745 | error (_("Bad breakpoint location number '%s'"), dot+1); | |
10746 | ||
10747 | return loc; | |
10748 | } | |
10749 | ||
10750 | ||
1900040c MS |
10751 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. |
10752 | If from_tty is nonzero, it prints a message to that effect, | |
10753 | which ends with a period (no newline). */ | |
10754 | ||
c906108c | 10755 | void |
fba45db2 | 10756 | disable_breakpoint (struct breakpoint *bpt) |
c906108c SS |
10757 | { |
10758 | /* Never disable a watchpoint scope breakpoint; we want to | |
10759 | hit them when we leave scope so we can delete both the | |
10760 | watchpoint and its scope breakpoint at that time. */ | |
10761 | if (bpt->type == bp_watchpoint_scope) | |
10762 | return; | |
10763 | ||
c2c6d25f | 10764 | /* You can't disable permanent breakpoints. */ |
b5de0fa7 | 10765 | if (bpt->enable_state == bp_permanent) |
c2c6d25f JM |
10766 | return; |
10767 | ||
b5de0fa7 | 10768 | bpt->enable_state = bp_disabled; |
c906108c | 10769 | |
b60e7edf | 10770 | update_global_location_list (0); |
c906108c | 10771 | |
383f836e | 10772 | observer_notify_breakpoint_modified (bpt->number); |
c906108c SS |
10773 | } |
10774 | ||
95a42b64 TT |
10775 | /* A callback for map_breakpoint_numbers that calls |
10776 | disable_breakpoint. */ | |
10777 | ||
10778 | static void | |
10779 | do_map_disable_breakpoint (struct breakpoint *b, void *ignore) | |
10780 | { | |
10781 | disable_breakpoint (b); | |
10782 | } | |
10783 | ||
c906108c | 10784 | static void |
fba45db2 | 10785 | disable_command (char *args, int from_tty) |
c906108c | 10786 | { |
52f0bd74 | 10787 | struct breakpoint *bpt; |
cc59ec59 | 10788 | |
c906108c SS |
10789 | if (args == 0) |
10790 | ALL_BREAKPOINTS (bpt) | |
10791 | switch (bpt->type) | |
c5aa993b JM |
10792 | { |
10793 | case bp_none: | |
8a3fe4f8 | 10794 | warning (_("attempted to disable apparently deleted breakpoint #%d?"), |
53a5351d | 10795 | bpt->number); |
c5aa993b JM |
10796 | continue; |
10797 | case bp_breakpoint: | |
1042e4c0 | 10798 | case bp_tracepoint: |
7a697b8d | 10799 | case bp_fast_tracepoint: |
0fb4aa4b | 10800 | case bp_static_tracepoint: |
ce78b96d | 10801 | case bp_catchpoint: |
c5aa993b JM |
10802 | case bp_hardware_breakpoint: |
10803 | case bp_watchpoint: | |
10804 | case bp_hardware_watchpoint: | |
10805 | case bp_read_watchpoint: | |
10806 | case bp_access_watchpoint: | |
10807 | disable_breakpoint (bpt); | |
10808 | default: | |
10809 | continue; | |
10810 | } | |
0d381245 VP |
10811 | else if (strchr (args, '.')) |
10812 | { | |
10813 | struct bp_location *loc = find_location_by_number (args); | |
10814 | if (loc) | |
10815 | loc->enabled = 0; | |
b60e7edf | 10816 | update_global_location_list (0); |
0d381245 | 10817 | } |
c906108c | 10818 | else |
95a42b64 | 10819 | map_breakpoint_numbers (args, do_map_disable_breakpoint, NULL); |
c906108c SS |
10820 | } |
10821 | ||
10822 | static void | |
fba45db2 | 10823 | do_enable_breakpoint (struct breakpoint *bpt, enum bpdisp disposition) |
c906108c | 10824 | { |
afe38095 | 10825 | int target_resources_ok; |
c906108c SS |
10826 | |
10827 | if (bpt->type == bp_hardware_breakpoint) | |
10828 | { | |
10829 | int i; | |
c5aa993b | 10830 | i = hw_breakpoint_used_count (); |
53a5351d | 10831 | target_resources_ok = |
d92524f1 | 10832 | target_can_use_hardware_watchpoint (bp_hardware_breakpoint, |
53a5351d | 10833 | i + 1, 0); |
c906108c | 10834 | if (target_resources_ok == 0) |
8a3fe4f8 | 10835 | error (_("No hardware breakpoint support in the target.")); |
c906108c | 10836 | else if (target_resources_ok < 0) |
8a3fe4f8 | 10837 | error (_("Hardware breakpoints used exceeds limit.")); |
c906108c SS |
10838 | } |
10839 | ||
cc60f2e3 | 10840 | if (is_watchpoint (bpt)) |
c906108c | 10841 | { |
dde02812 ES |
10842 | struct gdb_exception e; |
10843 | ||
10844 | TRY_CATCH (e, RETURN_MASK_ALL) | |
c906108c | 10845 | { |
dde02812 | 10846 | update_watchpoint (bpt, 1 /* reparse */); |
c906108c | 10847 | } |
dde02812 | 10848 | if (e.reason < 0) |
c5aa993b | 10849 | { |
dde02812 ES |
10850 | exception_fprintf (gdb_stderr, e, _("Cannot enable watchpoint %d: "), |
10851 | bpt->number); | |
10852 | return; | |
c5aa993b | 10853 | } |
c906108c | 10854 | } |
0101ce28 | 10855 | |
b4c291bb KH |
10856 | if (bpt->enable_state != bp_permanent) |
10857 | bpt->enable_state = bp_enabled; | |
10858 | bpt->disposition = disposition; | |
b60e7edf | 10859 | update_global_location_list (1); |
b4c291bb KH |
10860 | breakpoints_changed (); |
10861 | ||
383f836e | 10862 | observer_notify_breakpoint_modified (bpt->number); |
c906108c SS |
10863 | } |
10864 | ||
fe3f5fa8 | 10865 | |
c906108c | 10866 | void |
fba45db2 | 10867 | enable_breakpoint (struct breakpoint *bpt) |
c906108c SS |
10868 | { |
10869 | do_enable_breakpoint (bpt, bpt->disposition); | |
10870 | } | |
10871 | ||
95a42b64 TT |
10872 | /* A callback for map_breakpoint_numbers that calls |
10873 | enable_breakpoint. */ | |
10874 | ||
10875 | static void | |
10876 | do_map_enable_breakpoint (struct breakpoint *b, void *ignore) | |
10877 | { | |
10878 | enable_breakpoint (b); | |
10879 | } | |
10880 | ||
c906108c SS |
10881 | /* The enable command enables the specified breakpoints (or all defined |
10882 | breakpoints) so they once again become (or continue to be) effective | |
1272ad14 | 10883 | in stopping the inferior. */ |
c906108c | 10884 | |
c906108c | 10885 | static void |
fba45db2 | 10886 | enable_command (char *args, int from_tty) |
c906108c | 10887 | { |
52f0bd74 | 10888 | struct breakpoint *bpt; |
cc59ec59 | 10889 | |
c906108c SS |
10890 | if (args == 0) |
10891 | ALL_BREAKPOINTS (bpt) | |
10892 | switch (bpt->type) | |
c5aa993b JM |
10893 | { |
10894 | case bp_none: | |
8a3fe4f8 | 10895 | warning (_("attempted to enable apparently deleted breakpoint #%d?"), |
53a5351d | 10896 | bpt->number); |
c5aa993b JM |
10897 | continue; |
10898 | case bp_breakpoint: | |
1042e4c0 | 10899 | case bp_tracepoint: |
7a697b8d | 10900 | case bp_fast_tracepoint: |
0fb4aa4b | 10901 | case bp_static_tracepoint: |
ce78b96d | 10902 | case bp_catchpoint: |
c5aa993b JM |
10903 | case bp_hardware_breakpoint: |
10904 | case bp_watchpoint: | |
10905 | case bp_hardware_watchpoint: | |
10906 | case bp_read_watchpoint: | |
10907 | case bp_access_watchpoint: | |
10908 | enable_breakpoint (bpt); | |
10909 | default: | |
10910 | continue; | |
10911 | } | |
0d381245 VP |
10912 | else if (strchr (args, '.')) |
10913 | { | |
10914 | struct bp_location *loc = find_location_by_number (args); | |
10915 | if (loc) | |
10916 | loc->enabled = 1; | |
b60e7edf | 10917 | update_global_location_list (1); |
0d381245 | 10918 | } |
c906108c | 10919 | else |
95a42b64 | 10920 | map_breakpoint_numbers (args, do_map_enable_breakpoint, NULL); |
c906108c SS |
10921 | } |
10922 | ||
10923 | static void | |
95a42b64 | 10924 | enable_once_breakpoint (struct breakpoint *bpt, void *ignore) |
c906108c | 10925 | { |
b5de0fa7 | 10926 | do_enable_breakpoint (bpt, disp_disable); |
c906108c SS |
10927 | } |
10928 | ||
c906108c | 10929 | static void |
fba45db2 | 10930 | enable_once_command (char *args, int from_tty) |
c906108c | 10931 | { |
95a42b64 | 10932 | map_breakpoint_numbers (args, enable_once_breakpoint, NULL); |
c906108c SS |
10933 | } |
10934 | ||
10935 | static void | |
95a42b64 | 10936 | enable_delete_breakpoint (struct breakpoint *bpt, void *ignore) |
c906108c | 10937 | { |
b5de0fa7 | 10938 | do_enable_breakpoint (bpt, disp_del); |
c906108c SS |
10939 | } |
10940 | ||
c906108c | 10941 | static void |
fba45db2 | 10942 | enable_delete_command (char *args, int from_tty) |
c906108c | 10943 | { |
95a42b64 | 10944 | map_breakpoint_numbers (args, enable_delete_breakpoint, NULL); |
c906108c SS |
10945 | } |
10946 | \f | |
fa8d40ab JJ |
10947 | static void |
10948 | set_breakpoint_cmd (char *args, int from_tty) | |
10949 | { | |
10950 | } | |
10951 | ||
10952 | static void | |
10953 | show_breakpoint_cmd (char *args, int from_tty) | |
10954 | { | |
10955 | } | |
10956 | ||
1f3b5d1b PP |
10957 | /* Invalidate last known value of any hardware watchpoint if |
10958 | the memory which that value represents has been written to by | |
10959 | GDB itself. */ | |
10960 | ||
10961 | static void | |
10962 | invalidate_bp_value_on_memory_change (CORE_ADDR addr, int len, | |
10963 | const bfd_byte *data) | |
10964 | { | |
10965 | struct breakpoint *bp; | |
10966 | ||
10967 | ALL_BREAKPOINTS (bp) | |
10968 | if (bp->enable_state == bp_enabled | |
10969 | && bp->type == bp_hardware_watchpoint | |
10970 | && bp->val_valid && bp->val) | |
10971 | { | |
10972 | struct bp_location *loc; | |
10973 | ||
10974 | for (loc = bp->loc; loc != NULL; loc = loc->next) | |
10975 | if (loc->loc_type == bp_loc_hardware_watchpoint | |
10976 | && loc->address + loc->length > addr | |
10977 | && addr + len > loc->address) | |
10978 | { | |
10979 | value_free (bp->val); | |
10980 | bp->val = NULL; | |
10981 | bp->val_valid = 0; | |
10982 | } | |
10983 | } | |
10984 | } | |
10985 | ||
c906108c SS |
10986 | /* Use default_breakpoint_'s, or nothing if they aren't valid. */ |
10987 | ||
10988 | struct symtabs_and_lines | |
fba45db2 | 10989 | decode_line_spec_1 (char *string, int funfirstline) |
c906108c SS |
10990 | { |
10991 | struct symtabs_and_lines sals; | |
cc59ec59 | 10992 | |
c906108c | 10993 | if (string == 0) |
8a3fe4f8 | 10994 | error (_("Empty line specification.")); |
c906108c SS |
10995 | if (default_breakpoint_valid) |
10996 | sals = decode_line_1 (&string, funfirstline, | |
53a5351d JM |
10997 | default_breakpoint_symtab, |
10998 | default_breakpoint_line, | |
68219205 | 10999 | (char ***) NULL, NULL); |
c906108c SS |
11000 | else |
11001 | sals = decode_line_1 (&string, funfirstline, | |
68219205 | 11002 | (struct symtab *) NULL, 0, (char ***) NULL, NULL); |
c906108c | 11003 | if (*string) |
8a3fe4f8 | 11004 | error (_("Junk at end of line specification: %s"), string); |
c906108c SS |
11005 | return sals; |
11006 | } | |
8181d85f DJ |
11007 | |
11008 | /* Create and insert a raw software breakpoint at PC. Return an | |
11009 | identifier, which should be used to remove the breakpoint later. | |
11010 | In general, places which call this should be using something on the | |
11011 | breakpoint chain instead; this function should be eliminated | |
11012 | someday. */ | |
11013 | ||
11014 | void * | |
6c95b8df PA |
11015 | deprecated_insert_raw_breakpoint (struct gdbarch *gdbarch, |
11016 | struct address_space *aspace, CORE_ADDR pc) | |
8181d85f DJ |
11017 | { |
11018 | struct bp_target_info *bp_tgt; | |
11019 | ||
6c95b8df | 11020 | bp_tgt = XZALLOC (struct bp_target_info); |
8181d85f | 11021 | |
6c95b8df | 11022 | bp_tgt->placed_address_space = aspace; |
8181d85f | 11023 | bp_tgt->placed_address = pc; |
6c95b8df | 11024 | |
a6d9a66e | 11025 | if (target_insert_breakpoint (gdbarch, bp_tgt) != 0) |
8181d85f DJ |
11026 | { |
11027 | /* Could not insert the breakpoint. */ | |
11028 | xfree (bp_tgt); | |
11029 | return NULL; | |
11030 | } | |
11031 | ||
11032 | return bp_tgt; | |
11033 | } | |
11034 | ||
4a64f543 MS |
11035 | /* Remove a breakpoint BP inserted by |
11036 | deprecated_insert_raw_breakpoint. */ | |
8181d85f DJ |
11037 | |
11038 | int | |
a6d9a66e | 11039 | deprecated_remove_raw_breakpoint (struct gdbarch *gdbarch, void *bp) |
8181d85f DJ |
11040 | { |
11041 | struct bp_target_info *bp_tgt = bp; | |
11042 | int ret; | |
11043 | ||
a6d9a66e | 11044 | ret = target_remove_breakpoint (gdbarch, bp_tgt); |
8181d85f DJ |
11045 | xfree (bp_tgt); |
11046 | ||
11047 | return ret; | |
11048 | } | |
11049 | ||
4a64f543 MS |
11050 | /* One (or perhaps two) breakpoints used for software single |
11051 | stepping. */ | |
8181d85f DJ |
11052 | |
11053 | static void *single_step_breakpoints[2]; | |
a6d9a66e | 11054 | static struct gdbarch *single_step_gdbarch[2]; |
8181d85f DJ |
11055 | |
11056 | /* Create and insert a breakpoint for software single step. */ | |
11057 | ||
11058 | void | |
6c95b8df | 11059 | insert_single_step_breakpoint (struct gdbarch *gdbarch, |
4a64f543 MS |
11060 | struct address_space *aspace, |
11061 | CORE_ADDR next_pc) | |
8181d85f DJ |
11062 | { |
11063 | void **bpt_p; | |
11064 | ||
11065 | if (single_step_breakpoints[0] == NULL) | |
a6d9a66e UW |
11066 | { |
11067 | bpt_p = &single_step_breakpoints[0]; | |
11068 | single_step_gdbarch[0] = gdbarch; | |
11069 | } | |
8181d85f DJ |
11070 | else |
11071 | { | |
11072 | gdb_assert (single_step_breakpoints[1] == NULL); | |
11073 | bpt_p = &single_step_breakpoints[1]; | |
a6d9a66e | 11074 | single_step_gdbarch[1] = gdbarch; |
8181d85f DJ |
11075 | } |
11076 | ||
4a64f543 MS |
11077 | /* NOTE drow/2006-04-11: A future improvement to this function would |
11078 | be to only create the breakpoints once, and actually put them on | |
11079 | the breakpoint chain. That would let us use set_raw_breakpoint. | |
11080 | We could adjust the addresses each time they were needed. Doing | |
11081 | this requires corresponding changes elsewhere where single step | |
11082 | breakpoints are handled, however. So, for now, we use this. */ | |
8181d85f | 11083 | |
6c95b8df | 11084 | *bpt_p = deprecated_insert_raw_breakpoint (gdbarch, aspace, next_pc); |
8181d85f | 11085 | if (*bpt_p == NULL) |
5af949e3 UW |
11086 | error (_("Could not insert single-step breakpoint at %s"), |
11087 | paddress (gdbarch, next_pc)); | |
8181d85f DJ |
11088 | } |
11089 | ||
f02253f1 HZ |
11090 | /* Check if the breakpoints used for software single stepping |
11091 | were inserted or not. */ | |
11092 | ||
11093 | int | |
11094 | single_step_breakpoints_inserted (void) | |
11095 | { | |
11096 | return (single_step_breakpoints[0] != NULL | |
11097 | || single_step_breakpoints[1] != NULL); | |
11098 | } | |
11099 | ||
8181d85f DJ |
11100 | /* Remove and delete any breakpoints used for software single step. */ |
11101 | ||
11102 | void | |
11103 | remove_single_step_breakpoints (void) | |
11104 | { | |
11105 | gdb_assert (single_step_breakpoints[0] != NULL); | |
11106 | ||
11107 | /* See insert_single_step_breakpoint for more about this deprecated | |
11108 | call. */ | |
a6d9a66e UW |
11109 | deprecated_remove_raw_breakpoint (single_step_gdbarch[0], |
11110 | single_step_breakpoints[0]); | |
11111 | single_step_gdbarch[0] = NULL; | |
8181d85f DJ |
11112 | single_step_breakpoints[0] = NULL; |
11113 | ||
11114 | if (single_step_breakpoints[1] != NULL) | |
11115 | { | |
a6d9a66e UW |
11116 | deprecated_remove_raw_breakpoint (single_step_gdbarch[1], |
11117 | single_step_breakpoints[1]); | |
11118 | single_step_gdbarch[1] = NULL; | |
8181d85f DJ |
11119 | single_step_breakpoints[1] = NULL; |
11120 | } | |
11121 | } | |
11122 | ||
d03285ec UW |
11123 | /* Delete software single step breakpoints without removing them from |
11124 | the inferior. This is intended to be used if the inferior's address | |
11125 | space where they were inserted is already gone, e.g. after exit or | |
11126 | exec. */ | |
11127 | ||
11128 | void | |
11129 | cancel_single_step_breakpoints (void) | |
11130 | { | |
11131 | int i; | |
11132 | ||
11133 | for (i = 0; i < 2; i++) | |
11134 | if (single_step_breakpoints[i]) | |
11135 | { | |
11136 | xfree (single_step_breakpoints[i]); | |
11137 | single_step_breakpoints[i] = NULL; | |
11138 | single_step_gdbarch[i] = NULL; | |
11139 | } | |
11140 | } | |
11141 | ||
11142 | /* Detach software single-step breakpoints from INFERIOR_PTID without | |
11143 | removing them. */ | |
11144 | ||
11145 | static void | |
11146 | detach_single_step_breakpoints (void) | |
11147 | { | |
11148 | int i; | |
11149 | ||
11150 | for (i = 0; i < 2; i++) | |
11151 | if (single_step_breakpoints[i]) | |
11152 | target_remove_breakpoint (single_step_gdbarch[i], | |
11153 | single_step_breakpoints[i]); | |
11154 | } | |
11155 | ||
4a64f543 MS |
11156 | /* Check whether a software single-step breakpoint is inserted at |
11157 | PC. */ | |
1aafd4da UW |
11158 | |
11159 | static int | |
cc59ec59 MS |
11160 | single_step_breakpoint_inserted_here_p (struct address_space *aspace, |
11161 | CORE_ADDR pc) | |
1aafd4da UW |
11162 | { |
11163 | int i; | |
11164 | ||
11165 | for (i = 0; i < 2; i++) | |
11166 | { | |
11167 | struct bp_target_info *bp_tgt = single_step_breakpoints[i]; | |
6c95b8df PA |
11168 | if (bp_tgt |
11169 | && breakpoint_address_match (bp_tgt->placed_address_space, | |
11170 | bp_tgt->placed_address, | |
11171 | aspace, pc)) | |
1aafd4da UW |
11172 | return 1; |
11173 | } | |
11174 | ||
11175 | return 0; | |
11176 | } | |
11177 | ||
a96d9b2e SDJ |
11178 | /* Returns 0 if 'bp' is NOT a syscall catchpoint, |
11179 | non-zero otherwise. */ | |
11180 | static int | |
11181 | is_syscall_catchpoint_enabled (struct breakpoint *bp) | |
11182 | { | |
11183 | if (syscall_catchpoint_p (bp) | |
11184 | && bp->enable_state != bp_disabled | |
11185 | && bp->enable_state != bp_call_disabled) | |
11186 | return 1; | |
11187 | else | |
11188 | return 0; | |
11189 | } | |
11190 | ||
11191 | int | |
11192 | catch_syscall_enabled (void) | |
11193 | { | |
11194 | struct inferior *inf = current_inferior (); | |
11195 | ||
11196 | return inf->total_syscalls_count != 0; | |
11197 | } | |
11198 | ||
11199 | int | |
11200 | catching_syscall_number (int syscall_number) | |
11201 | { | |
11202 | struct breakpoint *bp; | |
11203 | ||
11204 | ALL_BREAKPOINTS (bp) | |
11205 | if (is_syscall_catchpoint_enabled (bp)) | |
11206 | { | |
11207 | if (bp->syscalls_to_be_caught) | |
11208 | { | |
11209 | int i, iter; | |
11210 | for (i = 0; | |
11211 | VEC_iterate (int, bp->syscalls_to_be_caught, i, iter); | |
11212 | i++) | |
11213 | if (syscall_number == iter) | |
11214 | return 1; | |
11215 | } | |
11216 | else | |
11217 | return 1; | |
11218 | } | |
11219 | ||
11220 | return 0; | |
11221 | } | |
11222 | ||
11223 | /* Complete syscall names. Used by "catch syscall". */ | |
11224 | static char ** | |
11225 | catch_syscall_completer (struct cmd_list_element *cmd, | |
11226 | char *text, char *word) | |
11227 | { | |
11228 | const char **list = get_syscall_names (); | |
cc59ec59 | 11229 | |
a96d9b2e SDJ |
11230 | return (list == NULL) ? NULL : complete_on_enum (list, text, word); |
11231 | } | |
11232 | ||
1042e4c0 SS |
11233 | /* Tracepoint-specific operations. */ |
11234 | ||
11235 | /* Set tracepoint count to NUM. */ | |
11236 | static void | |
11237 | set_tracepoint_count (int num) | |
11238 | { | |
11239 | tracepoint_count = num; | |
4fa62494 | 11240 | set_internalvar_integer (lookup_internalvar ("tpnum"), num); |
1042e4c0 SS |
11241 | } |
11242 | ||
11243 | void | |
11244 | trace_command (char *arg, int from_tty) | |
11245 | { | |
8cdf0e15 VP |
11246 | if (create_breakpoint (get_current_arch (), |
11247 | arg, | |
11248 | NULL, 0, 1 /* parse arg */, | |
0fb4aa4b PA |
11249 | 0 /* tempflag */, |
11250 | bp_tracepoint /* type_wanted */, | |
8cdf0e15 VP |
11251 | 0 /* Ignore count */, |
11252 | pending_break_support, | |
11253 | NULL, | |
11254 | from_tty, | |
84f4c1fe PM |
11255 | 1 /* enabled */, |
11256 | 0 /* internal */)) | |
fd9b8c24 | 11257 | set_tracepoint_count (breakpoint_count); |
1042e4c0 SS |
11258 | } |
11259 | ||
7a697b8d SS |
11260 | void |
11261 | ftrace_command (char *arg, int from_tty) | |
11262 | { | |
8cdf0e15 VP |
11263 | if (create_breakpoint (get_current_arch (), |
11264 | arg, | |
11265 | NULL, 0, 1 /* parse arg */, | |
0fb4aa4b PA |
11266 | 0 /* tempflag */, |
11267 | bp_fast_tracepoint /* type_wanted */, | |
11268 | 0 /* Ignore count */, | |
11269 | pending_break_support, | |
11270 | NULL, | |
11271 | from_tty, | |
84f4c1fe PM |
11272 | 1 /* enabled */, |
11273 | 0 /* internal */)) | |
0fb4aa4b PA |
11274 | set_tracepoint_count (breakpoint_count); |
11275 | } | |
11276 | ||
11277 | /* strace command implementation. Creates a static tracepoint. */ | |
11278 | ||
11279 | void | |
11280 | strace_command (char *arg, int from_tty) | |
11281 | { | |
11282 | if (create_breakpoint (get_current_arch (), | |
11283 | arg, | |
11284 | NULL, 0, 1 /* parse arg */, | |
11285 | 0 /* tempflag */, | |
11286 | bp_static_tracepoint /* type_wanted */, | |
8cdf0e15 VP |
11287 | 0 /* Ignore count */, |
11288 | pending_break_support, | |
11289 | NULL, | |
11290 | from_tty, | |
84f4c1fe PM |
11291 | 1 /* enabled */, |
11292 | 0 /* internal */)) | |
fd9b8c24 | 11293 | set_tracepoint_count (breakpoint_count); |
7a697b8d SS |
11294 | } |
11295 | ||
409873ef SS |
11296 | /* Set up a fake reader function that gets command lines from a linked |
11297 | list that was acquired during tracepoint uploading. */ | |
11298 | ||
11299 | static struct uploaded_tp *this_utp; | |
3149d8c1 | 11300 | static int next_cmd; |
409873ef SS |
11301 | |
11302 | static char * | |
11303 | read_uploaded_action (void) | |
11304 | { | |
11305 | char *rslt; | |
11306 | ||
3149d8c1 | 11307 | VEC_iterate (char_ptr, this_utp->cmd_strings, next_cmd, rslt); |
409873ef | 11308 | |
3149d8c1 | 11309 | next_cmd++; |
409873ef SS |
11310 | |
11311 | return rslt; | |
11312 | } | |
11313 | ||
00bf0b85 SS |
11314 | /* Given information about a tracepoint as recorded on a target (which |
11315 | can be either a live system or a trace file), attempt to create an | |
11316 | equivalent GDB tracepoint. This is not a reliable process, since | |
11317 | the target does not necessarily have all the information used when | |
11318 | the tracepoint was originally defined. */ | |
11319 | ||
11320 | struct breakpoint * | |
11321 | create_tracepoint_from_upload (struct uploaded_tp *utp) | |
d5551862 | 11322 | { |
409873ef | 11323 | char *addr_str, small_buf[100]; |
d5551862 | 11324 | struct breakpoint *tp; |
fd9b8c24 | 11325 | |
409873ef SS |
11326 | if (utp->at_string) |
11327 | addr_str = utp->at_string; | |
11328 | else | |
11329 | { | |
11330 | /* In the absence of a source location, fall back to raw | |
11331 | address. Since there is no way to confirm that the address | |
11332 | means the same thing as when the trace was started, warn the | |
11333 | user. */ | |
3e43a32a MS |
11334 | warning (_("Uploaded tracepoint %d has no " |
11335 | "source location, using raw address"), | |
409873ef SS |
11336 | utp->number); |
11337 | sprintf (small_buf, "*%s", hex_string (utp->addr)); | |
11338 | addr_str = small_buf; | |
11339 | } | |
11340 | ||
11341 | /* There's not much we can do with a sequence of bytecodes. */ | |
11342 | if (utp->cond && !utp->cond_string) | |
3e43a32a MS |
11343 | warning (_("Uploaded tracepoint %d condition " |
11344 | "has no source form, ignoring it"), | |
409873ef | 11345 | utp->number); |
d5551862 | 11346 | |
8cdf0e15 | 11347 | if (!create_breakpoint (get_current_arch (), |
409873ef SS |
11348 | addr_str, |
11349 | utp->cond_string, -1, 0 /* parse cond/thread */, | |
8cdf0e15 | 11350 | 0 /* tempflag */, |
0fb4aa4b | 11351 | utp->type /* type_wanted */, |
8cdf0e15 VP |
11352 | 0 /* Ignore count */, |
11353 | pending_break_support, | |
11354 | NULL, | |
11355 | 0 /* from_tty */, | |
84f4c1fe PM |
11356 | utp->enabled /* enabled */, |
11357 | 0 /* internal */)) | |
fd9b8c24 PA |
11358 | return NULL; |
11359 | ||
00bf0b85 SS |
11360 | set_tracepoint_count (breakpoint_count); |
11361 | ||
409873ef | 11362 | /* Get the tracepoint we just created. */ |
fd9b8c24 PA |
11363 | tp = get_tracepoint (tracepoint_count); |
11364 | gdb_assert (tp != NULL); | |
d5551862 | 11365 | |
00bf0b85 SS |
11366 | if (utp->pass > 0) |
11367 | { | |
409873ef | 11368 | sprintf (small_buf, "%d %d", utp->pass, tp->number); |
00bf0b85 | 11369 | |
409873ef | 11370 | trace_pass_command (small_buf, 0); |
00bf0b85 SS |
11371 | } |
11372 | ||
409873ef SS |
11373 | /* If we have uploaded versions of the original commands, set up a |
11374 | special-purpose "reader" function and call the usual command line | |
11375 | reader, then pass the result to the breakpoint command-setting | |
11376 | function. */ | |
3149d8c1 | 11377 | if (!VEC_empty (char_ptr, utp->cmd_strings)) |
00bf0b85 | 11378 | { |
409873ef | 11379 | struct command_line *cmd_list; |
00bf0b85 | 11380 | |
409873ef | 11381 | this_utp = utp; |
3149d8c1 | 11382 | next_cmd = 0; |
d5551862 | 11383 | |
409873ef SS |
11384 | cmd_list = read_command_lines_1 (read_uploaded_action, 1, NULL, NULL); |
11385 | ||
11386 | breakpoint_set_commands (tp, cmd_list); | |
00bf0b85 | 11387 | } |
3149d8c1 SS |
11388 | else if (!VEC_empty (char_ptr, utp->actions) |
11389 | || !VEC_empty (char_ptr, utp->step_actions)) | |
3e43a32a MS |
11390 | warning (_("Uploaded tracepoint %d actions " |
11391 | "have no source form, ignoring them"), | |
409873ef | 11392 | utp->number); |
00bf0b85 SS |
11393 | |
11394 | return tp; | |
11395 | } | |
11396 | ||
1042e4c0 SS |
11397 | /* Print information on tracepoint number TPNUM_EXP, or all if |
11398 | omitted. */ | |
11399 | ||
11400 | static void | |
11401 | tracepoints_info (char *tpnum_exp, int from_tty) | |
11402 | { | |
d77f58be SS |
11403 | int tpnum = -1, num_printed; |
11404 | ||
11405 | if (tpnum_exp) | |
11406 | tpnum = parse_and_eval_long (tpnum_exp); | |
1042e4c0 | 11407 | |
d77f58be SS |
11408 | num_printed = breakpoint_1 (tpnum, 0, is_tracepoint); |
11409 | ||
11410 | if (num_printed == 0) | |
1042e4c0 | 11411 | { |
d77f58be SS |
11412 | if (tpnum == -1) |
11413 | ui_out_message (uiout, 0, "No tracepoints.\n"); | |
11414 | else | |
11415 | ui_out_message (uiout, 0, "No tracepoint number %d.\n", tpnum); | |
1042e4c0 | 11416 | } |
ad443146 SS |
11417 | |
11418 | default_collect_info (); | |
1042e4c0 SS |
11419 | } |
11420 | ||
4a64f543 | 11421 | /* The 'enable trace' command enables tracepoints. |
1042e4c0 SS |
11422 | Not supported by all targets. */ |
11423 | static void | |
11424 | enable_trace_command (char *args, int from_tty) | |
11425 | { | |
11426 | enable_command (args, from_tty); | |
11427 | } | |
11428 | ||
4a64f543 | 11429 | /* The 'disable trace' command disables tracepoints. |
1042e4c0 SS |
11430 | Not supported by all targets. */ |
11431 | static void | |
11432 | disable_trace_command (char *args, int from_tty) | |
11433 | { | |
11434 | disable_command (args, from_tty); | |
11435 | } | |
11436 | ||
4a64f543 | 11437 | /* Remove a tracepoint (or all if no argument). */ |
1042e4c0 SS |
11438 | static void |
11439 | delete_trace_command (char *arg, int from_tty) | |
11440 | { | |
35df4500 | 11441 | struct breakpoint *b, *b_tmp; |
1042e4c0 SS |
11442 | |
11443 | dont_repeat (); | |
11444 | ||
11445 | if (arg == 0) | |
11446 | { | |
11447 | int breaks_to_delete = 0; | |
11448 | ||
11449 | /* Delete all breakpoints if no argument. | |
11450 | Do not delete internal or call-dummy breakpoints, these | |
4a64f543 MS |
11451 | have to be deleted with an explicit breakpoint number |
11452 | argument. */ | |
1042e4c0 SS |
11453 | ALL_TRACEPOINTS (b) |
11454 | { | |
11455 | if (b->number >= 0) | |
11456 | { | |
11457 | breaks_to_delete = 1; | |
11458 | break; | |
11459 | } | |
11460 | } | |
11461 | ||
11462 | /* Ask user only if there are some breakpoints to delete. */ | |
11463 | if (!from_tty | |
11464 | || (breaks_to_delete && query (_("Delete all tracepoints? ")))) | |
11465 | { | |
35df4500 | 11466 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
1042e4c0 | 11467 | { |
d77f58be | 11468 | if (is_tracepoint (b) |
059fb39f | 11469 | && b->number >= 0) |
1042e4c0 SS |
11470 | delete_breakpoint (b); |
11471 | } | |
11472 | } | |
11473 | } | |
11474 | else | |
95a42b64 | 11475 | map_breakpoint_numbers (arg, do_delete_breakpoint, NULL); |
1042e4c0 SS |
11476 | } |
11477 | ||
11478 | /* Set passcount for tracepoint. | |
11479 | ||
11480 | First command argument is passcount, second is tracepoint number. | |
11481 | If tracepoint number omitted, apply to most recently defined. | |
11482 | Also accepts special argument "all". */ | |
11483 | ||
11484 | static void | |
11485 | trace_pass_command (char *args, int from_tty) | |
11486 | { | |
11487 | struct breakpoint *t1 = (struct breakpoint *) -1, *t2; | |
11488 | unsigned int count; | |
11489 | int all = 0; | |
11490 | ||
11491 | if (args == 0 || *args == 0) | |
3e43a32a MS |
11492 | error (_("passcount command requires an " |
11493 | "argument (count + optional TP num)")); | |
1042e4c0 | 11494 | |
4a64f543 | 11495 | count = strtoul (args, &args, 10); /* Count comes first, then TP num. */ |
1042e4c0 SS |
11496 | |
11497 | while (*args && isspace ((int) *args)) | |
11498 | args++; | |
11499 | ||
11500 | if (*args && strncasecmp (args, "all", 3) == 0) | |
11501 | { | |
11502 | args += 3; /* Skip special argument "all". */ | |
11503 | all = 1; | |
11504 | if (*args) | |
11505 | error (_("Junk at end of arguments.")); | |
11506 | } | |
11507 | else | |
11508 | t1 = get_tracepoint_by_number (&args, 1, 1); | |
11509 | ||
11510 | do | |
11511 | { | |
11512 | if (t1) | |
11513 | { | |
11514 | ALL_TRACEPOINTS (t2) | |
11515 | if (t1 == (struct breakpoint *) -1 || t1 == t2) | |
11516 | { | |
11517 | t2->pass_count = count; | |
11518 | observer_notify_tracepoint_modified (t2->number); | |
11519 | if (from_tty) | |
3e43a32a MS |
11520 | printf_filtered (_("Setting tracepoint %d's " |
11521 | "passcount to %d\n"), | |
1042e4c0 SS |
11522 | t2->number, count); |
11523 | } | |
11524 | if (! all && *args) | |
11525 | t1 = get_tracepoint_by_number (&args, 1, 0); | |
11526 | } | |
11527 | } | |
11528 | while (*args); | |
11529 | } | |
11530 | ||
11531 | struct breakpoint * | |
11532 | get_tracepoint (int num) | |
11533 | { | |
11534 | struct breakpoint *t; | |
11535 | ||
11536 | ALL_TRACEPOINTS (t) | |
11537 | if (t->number == num) | |
11538 | return t; | |
11539 | ||
11540 | return NULL; | |
11541 | } | |
11542 | ||
d5551862 SS |
11543 | /* Find the tracepoint with the given target-side number (which may be |
11544 | different from the tracepoint number after disconnecting and | |
11545 | reconnecting). */ | |
11546 | ||
11547 | struct breakpoint * | |
11548 | get_tracepoint_by_number_on_target (int num) | |
11549 | { | |
11550 | struct breakpoint *t; | |
11551 | ||
11552 | ALL_TRACEPOINTS (t) | |
11553 | if (t->number_on_target == num) | |
11554 | return t; | |
11555 | ||
11556 | return NULL; | |
11557 | } | |
11558 | ||
1042e4c0 SS |
11559 | /* Utility: parse a tracepoint number and look it up in the list. |
11560 | If MULTI_P is true, there might be a range of tracepoints in ARG. | |
11561 | if OPTIONAL_P is true, then if the argument is missing, the most | |
11562 | recent tracepoint (tracepoint_count) is returned. */ | |
11563 | struct breakpoint * | |
11564 | get_tracepoint_by_number (char **arg, int multi_p, int optional_p) | |
11565 | { | |
11566 | extern int tracepoint_count; | |
11567 | struct breakpoint *t; | |
11568 | int tpnum; | |
11569 | char *instring = arg == NULL ? NULL : *arg; | |
11570 | ||
11571 | if (arg == NULL || *arg == NULL || ! **arg) | |
11572 | { | |
11573 | if (optional_p) | |
11574 | tpnum = tracepoint_count; | |
11575 | else | |
11576 | error_no_arg (_("tracepoint number")); | |
11577 | } | |
11578 | else | |
11579 | tpnum = multi_p ? get_number_or_range (arg) : get_number (arg); | |
11580 | ||
11581 | if (tpnum <= 0) | |
11582 | { | |
11583 | if (instring && *instring) | |
11584 | printf_filtered (_("bad tracepoint number at or near '%s'\n"), | |
11585 | instring); | |
11586 | else | |
3e43a32a MS |
11587 | printf_filtered (_("Tracepoint argument missing " |
11588 | "and no previous tracepoint\n")); | |
1042e4c0 SS |
11589 | return NULL; |
11590 | } | |
11591 | ||
11592 | ALL_TRACEPOINTS (t) | |
11593 | if (t->number == tpnum) | |
11594 | { | |
11595 | return t; | |
11596 | } | |
11597 | ||
11598 | /* FIXME: if we are in the middle of a range we don't want to give | |
11599 | a message. The current interface to get_number_or_range doesn't | |
11600 | allow us to discover this. */ | |
11601 | printf_unfiltered ("No tracepoint number %d.\n", tpnum); | |
11602 | return NULL; | |
11603 | } | |
11604 | ||
6149aea9 PA |
11605 | /* Save information on user settable breakpoints (watchpoints, etc) to |
11606 | a new script file named FILENAME. If FILTER is non-NULL, call it | |
11607 | on each breakpoint and only include the ones for which it returns | |
11608 | non-zero. */ | |
11609 | ||
1042e4c0 | 11610 | static void |
6149aea9 PA |
11611 | save_breakpoints (char *filename, int from_tty, |
11612 | int (*filter) (const struct breakpoint *)) | |
1042e4c0 SS |
11613 | { |
11614 | struct breakpoint *tp; | |
6149aea9 | 11615 | int any = 0; |
a7bdde9e | 11616 | char *pathname; |
1042e4c0 | 11617 | struct cleanup *cleanup; |
a7bdde9e | 11618 | struct ui_file *fp; |
6149aea9 | 11619 | int extra_trace_bits = 0; |
1042e4c0 | 11620 | |
6149aea9 PA |
11621 | if (filename == 0 || *filename == 0) |
11622 | error (_("Argument required (file name in which to save)")); | |
1042e4c0 SS |
11623 | |
11624 | /* See if we have anything to save. */ | |
6149aea9 | 11625 | ALL_BREAKPOINTS (tp) |
1042e4c0 | 11626 | { |
6149aea9 | 11627 | /* Skip internal and momentary breakpoints. */ |
84f4c1fe | 11628 | if (!user_settable_breakpoint (tp) || tp->number < 0) |
6149aea9 PA |
11629 | continue; |
11630 | ||
11631 | /* If we have a filter, only save the breakpoints it accepts. */ | |
11632 | if (filter && !filter (tp)) | |
11633 | continue; | |
11634 | ||
11635 | any = 1; | |
11636 | ||
11637 | if (is_tracepoint (tp)) | |
11638 | { | |
11639 | extra_trace_bits = 1; | |
11640 | ||
11641 | /* We can stop searching. */ | |
11642 | break; | |
11643 | } | |
1042e4c0 | 11644 | } |
6149aea9 PA |
11645 | |
11646 | if (!any) | |
1042e4c0 | 11647 | { |
6149aea9 | 11648 | warning (_("Nothing to save.")); |
1042e4c0 SS |
11649 | return; |
11650 | } | |
11651 | ||
6149aea9 | 11652 | pathname = tilde_expand (filename); |
1042e4c0 | 11653 | cleanup = make_cleanup (xfree, pathname); |
a7bdde9e | 11654 | fp = gdb_fopen (pathname, "w"); |
059fb39f | 11655 | if (!fp) |
6149aea9 PA |
11656 | error (_("Unable to open file '%s' for saving (%s)"), |
11657 | filename, safe_strerror (errno)); | |
a7bdde9e | 11658 | make_cleanup_ui_file_delete (fp); |
8bf6485c | 11659 | |
6149aea9 PA |
11660 | if (extra_trace_bits) |
11661 | save_trace_state_variables (fp); | |
8bf6485c | 11662 | |
6149aea9 | 11663 | ALL_BREAKPOINTS (tp) |
1042e4c0 | 11664 | { |
6149aea9 | 11665 | /* Skip internal and momentary breakpoints. */ |
84f4c1fe | 11666 | if (!user_settable_breakpoint (tp) || tp->number < 0) |
6149aea9 | 11667 | continue; |
8bf6485c | 11668 | |
6149aea9 PA |
11669 | /* If we have a filter, only save the breakpoints it accepts. */ |
11670 | if (filter && !filter (tp)) | |
11671 | continue; | |
11672 | ||
11673 | if (tp->ops != NULL) | |
11674 | (tp->ops->print_recreate) (tp, fp); | |
1042e4c0 SS |
11675 | else |
11676 | { | |
6149aea9 PA |
11677 | if (tp->type == bp_fast_tracepoint) |
11678 | fprintf_unfiltered (fp, "ftrace"); | |
0fb4aa4b PA |
11679 | if (tp->type == bp_static_tracepoint) |
11680 | fprintf_unfiltered (fp, "strace"); | |
6149aea9 PA |
11681 | else if (tp->type == bp_tracepoint) |
11682 | fprintf_unfiltered (fp, "trace"); | |
11683 | else if (tp->type == bp_breakpoint && tp->disposition == disp_del) | |
11684 | fprintf_unfiltered (fp, "tbreak"); | |
11685 | else if (tp->type == bp_breakpoint) | |
11686 | fprintf_unfiltered (fp, "break"); | |
11687 | else if (tp->type == bp_hardware_breakpoint | |
11688 | && tp->disposition == disp_del) | |
11689 | fprintf_unfiltered (fp, "thbreak"); | |
11690 | else if (tp->type == bp_hardware_breakpoint) | |
11691 | fprintf_unfiltered (fp, "hbreak"); | |
11692 | else if (tp->type == bp_watchpoint) | |
11693 | fprintf_unfiltered (fp, "watch"); | |
11694 | else if (tp->type == bp_hardware_watchpoint) | |
11695 | fprintf_unfiltered (fp, "watch"); | |
11696 | else if (tp->type == bp_read_watchpoint) | |
11697 | fprintf_unfiltered (fp, "rwatch"); | |
11698 | else if (tp->type == bp_access_watchpoint) | |
11699 | fprintf_unfiltered (fp, "awatch"); | |
11700 | else | |
11701 | internal_error (__FILE__, __LINE__, | |
11702 | _("unhandled breakpoint type %d"), (int) tp->type); | |
11703 | ||
11704 | if (tp->exp_string) | |
11705 | fprintf_unfiltered (fp, " %s", tp->exp_string); | |
11706 | else if (tp->addr_string) | |
11707 | fprintf_unfiltered (fp, " %s", tp->addr_string); | |
11708 | else | |
11709 | { | |
11710 | char tmp[40]; | |
11711 | ||
11712 | sprintf_vma (tmp, tp->loc->address); | |
11713 | fprintf_unfiltered (fp, " *0x%s", tmp); | |
11714 | } | |
1042e4c0 SS |
11715 | } |
11716 | ||
6149aea9 PA |
11717 | if (tp->thread != -1) |
11718 | fprintf_unfiltered (fp, " thread %d", tp->thread); | |
11719 | ||
11720 | if (tp->task != 0) | |
11721 | fprintf_unfiltered (fp, " task %d", tp->task); | |
8bf6485c SS |
11722 | |
11723 | fprintf_unfiltered (fp, "\n"); | |
11724 | ||
6149aea9 PA |
11725 | /* Note, we can't rely on tp->number for anything, as we can't |
11726 | assume the recreated breakpoint numbers will match. Use $bpnum | |
11727 | instead. */ | |
11728 | ||
11729 | if (tp->cond_string) | |
11730 | fprintf_unfiltered (fp, " condition $bpnum %s\n", tp->cond_string); | |
11731 | ||
11732 | if (tp->ignore_count) | |
11733 | fprintf_unfiltered (fp, " ignore $bpnum %d\n", tp->ignore_count); | |
11734 | ||
1042e4c0 | 11735 | if (tp->pass_count) |
a7bdde9e | 11736 | fprintf_unfiltered (fp, " passcount %d\n", tp->pass_count); |
1042e4c0 | 11737 | |
a7bdde9e | 11738 | if (tp->commands) |
1042e4c0 | 11739 | { |
a7bdde9e VP |
11740 | volatile struct gdb_exception ex; |
11741 | ||
6149aea9 | 11742 | fprintf_unfiltered (fp, " commands\n"); |
a7bdde9e VP |
11743 | |
11744 | ui_out_redirect (uiout, fp); | |
14dba4b4 | 11745 | TRY_CATCH (ex, RETURN_MASK_ALL) |
1042e4c0 | 11746 | { |
9add0f1b | 11747 | print_command_lines (uiout, tp->commands->commands, 2); |
a7bdde9e VP |
11748 | } |
11749 | ui_out_redirect (uiout, NULL); | |
1042e4c0 | 11750 | |
a7bdde9e VP |
11751 | if (ex.reason < 0) |
11752 | throw_exception (ex); | |
1042e4c0 | 11753 | |
a7bdde9e | 11754 | fprintf_unfiltered (fp, " end\n"); |
1042e4c0 | 11755 | } |
6149aea9 PA |
11756 | |
11757 | if (tp->enable_state == bp_disabled) | |
11758 | fprintf_unfiltered (fp, "disable\n"); | |
11759 | ||
11760 | /* If this is a multi-location breakpoint, check if the locations | |
11761 | should be individually disabled. Watchpoint locations are | |
11762 | special, and not user visible. */ | |
11763 | if (!is_watchpoint (tp) && tp->loc && tp->loc->next) | |
11764 | { | |
11765 | struct bp_location *loc; | |
11766 | int n = 1; | |
11767 | ||
11768 | for (loc = tp->loc; loc != NULL; loc = loc->next, n++) | |
11769 | if (!loc->enabled) | |
11770 | fprintf_unfiltered (fp, "disable $bpnum.%d\n", n); | |
11771 | } | |
1042e4c0 | 11772 | } |
8bf6485c | 11773 | |
6149aea9 | 11774 | if (extra_trace_bits && *default_collect) |
8bf6485c SS |
11775 | fprintf_unfiltered (fp, "set default-collect %s\n", default_collect); |
11776 | ||
1042e4c0 SS |
11777 | do_cleanups (cleanup); |
11778 | if (from_tty) | |
6149aea9 PA |
11779 | printf_filtered (_("Saved to file '%s'.\n"), filename); |
11780 | } | |
11781 | ||
11782 | /* The `save breakpoints' command. */ | |
11783 | ||
11784 | static void | |
11785 | save_breakpoints_command (char *args, int from_tty) | |
11786 | { | |
11787 | save_breakpoints (args, from_tty, NULL); | |
11788 | } | |
11789 | ||
11790 | /* The `save tracepoints' command. */ | |
11791 | ||
11792 | static void | |
11793 | save_tracepoints_command (char *args, int from_tty) | |
11794 | { | |
11795 | save_breakpoints (args, from_tty, is_tracepoint); | |
1042e4c0 SS |
11796 | } |
11797 | ||
11798 | /* Create a vector of all tracepoints. */ | |
11799 | ||
11800 | VEC(breakpoint_p) * | |
11801 | all_tracepoints () | |
11802 | { | |
11803 | VEC(breakpoint_p) *tp_vec = 0; | |
11804 | struct breakpoint *tp; | |
11805 | ||
11806 | ALL_TRACEPOINTS (tp) | |
11807 | { | |
11808 | VEC_safe_push (breakpoint_p, tp_vec, tp); | |
11809 | } | |
11810 | ||
11811 | return tp_vec; | |
11812 | } | |
11813 | ||
c906108c | 11814 | \f |
4a64f543 MS |
11815 | /* This help string is used for the break, hbreak, tbreak and thbreak |
11816 | commands. It is defined as a macro to prevent duplication. | |
11817 | COMMAND should be a string constant containing the name of the | |
11818 | command. */ | |
31e2b00f AS |
11819 | #define BREAK_ARGS_HELP(command) \ |
11820 | command" [LOCATION] [thread THREADNUM] [if CONDITION]\n\ | |
11821 | LOCATION may be a line number, function name, or \"*\" and an address.\n\ | |
11822 | If a line number is specified, break at start of code for that line.\n\ | |
11823 | If a function is specified, break at start of code for that function.\n\ | |
11824 | If an address is specified, break at that exact address.\n\ | |
dc10affe PA |
11825 | With no LOCATION, uses current execution address of the selected\n\ |
11826 | stack frame. This is useful for breaking on return to a stack frame.\n\ | |
31e2b00f AS |
11827 | \n\ |
11828 | THREADNUM is the number from \"info threads\".\n\ | |
11829 | CONDITION is a boolean expression.\n\ | |
11830 | \n\ | |
d41c0fc8 PA |
11831 | Multiple breakpoints at one place are permitted, and useful if their\n\ |
11832 | conditions are different.\n\ | |
31e2b00f AS |
11833 | \n\ |
11834 | Do \"help breakpoints\" for info on other commands dealing with breakpoints." | |
11835 | ||
44feb3ce TT |
11836 | /* List of subcommands for "catch". */ |
11837 | static struct cmd_list_element *catch_cmdlist; | |
11838 | ||
11839 | /* List of subcommands for "tcatch". */ | |
11840 | static struct cmd_list_element *tcatch_cmdlist; | |
11841 | ||
11842 | /* Like add_cmd, but add the command to both the "catch" and "tcatch" | |
11843 | lists, and pass some additional user data to the command function. */ | |
11844 | static void | |
11845 | add_catch_command (char *name, char *docstring, | |
11846 | void (*sfunc) (char *args, int from_tty, | |
11847 | struct cmd_list_element *command), | |
a96d9b2e SDJ |
11848 | char **(*completer) (struct cmd_list_element *cmd, |
11849 | char *text, char *word), | |
44feb3ce TT |
11850 | void *user_data_catch, |
11851 | void *user_data_tcatch) | |
11852 | { | |
11853 | struct cmd_list_element *command; | |
11854 | ||
11855 | command = add_cmd (name, class_breakpoint, NULL, docstring, | |
11856 | &catch_cmdlist); | |
11857 | set_cmd_sfunc (command, sfunc); | |
11858 | set_cmd_context (command, user_data_catch); | |
a96d9b2e | 11859 | set_cmd_completer (command, completer); |
44feb3ce TT |
11860 | |
11861 | command = add_cmd (name, class_breakpoint, NULL, docstring, | |
11862 | &tcatch_cmdlist); | |
11863 | set_cmd_sfunc (command, sfunc); | |
11864 | set_cmd_context (command, user_data_tcatch); | |
a96d9b2e | 11865 | set_cmd_completer (command, completer); |
44feb3ce TT |
11866 | } |
11867 | ||
6c95b8df | 11868 | static void |
a79b8f6e | 11869 | clear_syscall_counts (struct inferior *inf) |
6c95b8df | 11870 | { |
6c95b8df PA |
11871 | inf->total_syscalls_count = 0; |
11872 | inf->any_syscall_count = 0; | |
11873 | VEC_free (int, inf->syscalls_counts); | |
11874 | } | |
11875 | ||
6149aea9 PA |
11876 | static void |
11877 | save_command (char *arg, int from_tty) | |
11878 | { | |
3e43a32a MS |
11879 | printf_unfiltered (_("\"save\" must be followed by " |
11880 | "the name of a save subcommand.\n")); | |
6149aea9 PA |
11881 | help_list (save_cmdlist, "save ", -1, gdb_stdout); |
11882 | } | |
11883 | ||
84f4c1fe PM |
11884 | struct breakpoint * |
11885 | iterate_over_breakpoints (int (*callback) (struct breakpoint *, void *), | |
11886 | void *data) | |
11887 | { | |
35df4500 | 11888 | struct breakpoint *b, *b_tmp; |
84f4c1fe | 11889 | |
35df4500 | 11890 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
84f4c1fe PM |
11891 | { |
11892 | if ((*callback) (b, data)) | |
11893 | return b; | |
11894 | } | |
11895 | ||
11896 | return NULL; | |
11897 | } | |
11898 | ||
c906108c | 11899 | void |
fba45db2 | 11900 | _initialize_breakpoint (void) |
c906108c SS |
11901 | { |
11902 | struct cmd_list_element *c; | |
11903 | ||
84acb35a | 11904 | observer_attach_solib_unloaded (disable_breakpoints_in_unloaded_shlib); |
6c95b8df | 11905 | observer_attach_inferior_exit (clear_syscall_counts); |
1f3b5d1b | 11906 | observer_attach_memory_changed (invalidate_bp_value_on_memory_change); |
84acb35a | 11907 | |
c906108c SS |
11908 | breakpoint_chain = 0; |
11909 | /* Don't bother to call set_breakpoint_count. $bpnum isn't useful | |
11910 | before a breakpoint is set. */ | |
11911 | breakpoint_count = 0; | |
11912 | ||
1042e4c0 SS |
11913 | tracepoint_count = 0; |
11914 | ||
1bedd215 AC |
11915 | add_com ("ignore", class_breakpoint, ignore_command, _("\ |
11916 | Set ignore-count of breakpoint number N to COUNT.\n\ | |
11917 | Usage is `ignore N COUNT'.")); | |
c906108c | 11918 | if (xdb_commands) |
c5aa993b | 11919 | add_com_alias ("bc", "ignore", class_breakpoint, 1); |
c906108c | 11920 | |
1bedd215 AC |
11921 | add_com ("commands", class_breakpoint, commands_command, _("\ |
11922 | Set commands to be executed when a breakpoint is hit.\n\ | |
c906108c SS |
11923 | Give breakpoint number as argument after \"commands\".\n\ |
11924 | With no argument, the targeted breakpoint is the last one set.\n\ | |
11925 | The commands themselves follow starting on the next line.\n\ | |
11926 | Type a line containing \"end\" to indicate the end of them.\n\ | |
11927 | Give \"silent\" as the first line to make the breakpoint silent;\n\ | |
1bedd215 | 11928 | then no output is printed when it is hit, except what the commands print.")); |
c906108c | 11929 | |
1bedd215 AC |
11930 | add_com ("condition", class_breakpoint, condition_command, _("\ |
11931 | Specify breakpoint number N to break only if COND is true.\n\ | |
c906108c | 11932 | Usage is `condition N COND', where N is an integer and COND is an\n\ |
1bedd215 | 11933 | expression to be evaluated whenever breakpoint N is reached.")); |
c906108c | 11934 | |
1bedd215 | 11935 | c = add_com ("tbreak", class_breakpoint, tbreak_command, _("\ |
31e2b00f | 11936 | Set a temporary breakpoint.\n\ |
c906108c SS |
11937 | Like \"break\" except the breakpoint is only temporary,\n\ |
11938 | so it will be deleted when hit. Equivalent to \"break\" followed\n\ | |
31e2b00f AS |
11939 | by using \"enable delete\" on the breakpoint number.\n\ |
11940 | \n" | |
11941 | BREAK_ARGS_HELP ("tbreak"))); | |
5ba2abeb | 11942 | set_cmd_completer (c, location_completer); |
c94fdfd0 | 11943 | |
1bedd215 | 11944 | c = add_com ("hbreak", class_breakpoint, hbreak_command, _("\ |
31e2b00f | 11945 | Set a hardware assisted breakpoint.\n\ |
c906108c | 11946 | Like \"break\" except the breakpoint requires hardware support,\n\ |
31e2b00f AS |
11947 | some target hardware may not have this support.\n\ |
11948 | \n" | |
11949 | BREAK_ARGS_HELP ("hbreak"))); | |
5ba2abeb | 11950 | set_cmd_completer (c, location_completer); |
c906108c | 11951 | |
1bedd215 | 11952 | c = add_com ("thbreak", class_breakpoint, thbreak_command, _("\ |
31e2b00f | 11953 | Set a temporary hardware assisted breakpoint.\n\ |
c906108c | 11954 | Like \"hbreak\" except the breakpoint is only temporary,\n\ |
31e2b00f AS |
11955 | so it will be deleted when hit.\n\ |
11956 | \n" | |
11957 | BREAK_ARGS_HELP ("thbreak"))); | |
5ba2abeb | 11958 | set_cmd_completer (c, location_completer); |
c906108c | 11959 | |
1bedd215 AC |
11960 | add_prefix_cmd ("enable", class_breakpoint, enable_command, _("\ |
11961 | Enable some breakpoints.\n\ | |
c906108c SS |
11962 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
11963 | With no subcommand, breakpoints are enabled until you command otherwise.\n\ | |
11964 | This is used to cancel the effect of the \"disable\" command.\n\ | |
1bedd215 | 11965 | With a subcommand you can enable temporarily."), |
c906108c SS |
11966 | &enablelist, "enable ", 1, &cmdlist); |
11967 | if (xdb_commands) | |
1bedd215 AC |
11968 | add_com ("ab", class_breakpoint, enable_command, _("\ |
11969 | Enable some breakpoints.\n\ | |
c906108c SS |
11970 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
11971 | With no subcommand, breakpoints are enabled until you command otherwise.\n\ | |
11972 | This is used to cancel the effect of the \"disable\" command.\n\ | |
1bedd215 | 11973 | With a subcommand you can enable temporarily.")); |
c906108c SS |
11974 | |
11975 | add_com_alias ("en", "enable", class_breakpoint, 1); | |
11976 | ||
84951ab5 | 11977 | add_prefix_cmd ("breakpoints", class_breakpoint, enable_command, _("\ |
1bedd215 | 11978 | Enable some breakpoints.\n\ |
c906108c SS |
11979 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
11980 | This is used to cancel the effect of the \"disable\" command.\n\ | |
1bedd215 | 11981 | May be abbreviated to simply \"enable\".\n"), |
c5aa993b | 11982 | &enablebreaklist, "enable breakpoints ", 1, &enablelist); |
c906108c | 11983 | |
1a966eab AC |
11984 | add_cmd ("once", no_class, enable_once_command, _("\ |
11985 | Enable breakpoints for one hit. Give breakpoint numbers.\n\ | |
11986 | If a breakpoint is hit while enabled in this fashion, it becomes disabled."), | |
c906108c SS |
11987 | &enablebreaklist); |
11988 | ||
1a966eab AC |
11989 | add_cmd ("delete", no_class, enable_delete_command, _("\ |
11990 | Enable breakpoints and delete when hit. Give breakpoint numbers.\n\ | |
11991 | If a breakpoint is hit while enabled in this fashion, it is deleted."), | |
c906108c SS |
11992 | &enablebreaklist); |
11993 | ||
1a966eab AC |
11994 | add_cmd ("delete", no_class, enable_delete_command, _("\ |
11995 | Enable breakpoints and delete when hit. Give breakpoint numbers.\n\ | |
11996 | If a breakpoint is hit while enabled in this fashion, it is deleted."), | |
c906108c SS |
11997 | &enablelist); |
11998 | ||
1a966eab AC |
11999 | add_cmd ("once", no_class, enable_once_command, _("\ |
12000 | Enable breakpoints for one hit. Give breakpoint numbers.\n\ | |
12001 | If a breakpoint is hit while enabled in this fashion, it becomes disabled."), | |
c906108c SS |
12002 | &enablelist); |
12003 | ||
1bedd215 AC |
12004 | add_prefix_cmd ("disable", class_breakpoint, disable_command, _("\ |
12005 | Disable some breakpoints.\n\ | |
c906108c SS |
12006 | Arguments are breakpoint numbers with spaces in between.\n\ |
12007 | To disable all breakpoints, give no argument.\n\ | |
1bedd215 | 12008 | A disabled breakpoint is not forgotten, but has no effect until reenabled."), |
c906108c SS |
12009 | &disablelist, "disable ", 1, &cmdlist); |
12010 | add_com_alias ("dis", "disable", class_breakpoint, 1); | |
12011 | add_com_alias ("disa", "disable", class_breakpoint, 1); | |
12012 | if (xdb_commands) | |
1bedd215 AC |
12013 | add_com ("sb", class_breakpoint, disable_command, _("\ |
12014 | Disable some breakpoints.\n\ | |
c906108c SS |
12015 | Arguments are breakpoint numbers with spaces in between.\n\ |
12016 | To disable all breakpoints, give no argument.\n\ | |
1bedd215 | 12017 | A disabled breakpoint is not forgotten, but has no effect until reenabled.")); |
c906108c | 12018 | |
1a966eab AC |
12019 | add_cmd ("breakpoints", class_alias, disable_command, _("\ |
12020 | Disable some breakpoints.\n\ | |
c906108c SS |
12021 | Arguments are breakpoint numbers with spaces in between.\n\ |
12022 | To disable all breakpoints, give no argument.\n\ | |
12023 | A disabled breakpoint is not forgotten, but has no effect until reenabled.\n\ | |
1a966eab | 12024 | This command may be abbreviated \"disable\"."), |
c906108c SS |
12025 | &disablelist); |
12026 | ||
1bedd215 AC |
12027 | add_prefix_cmd ("delete", class_breakpoint, delete_command, _("\ |
12028 | Delete some breakpoints or auto-display expressions.\n\ | |
c906108c SS |
12029 | Arguments are breakpoint numbers with spaces in between.\n\ |
12030 | To delete all breakpoints, give no argument.\n\ | |
12031 | \n\ | |
12032 | Also a prefix command for deletion of other GDB objects.\n\ | |
1bedd215 | 12033 | The \"unset\" command is also an alias for \"delete\"."), |
c906108c SS |
12034 | &deletelist, "delete ", 1, &cmdlist); |
12035 | add_com_alias ("d", "delete", class_breakpoint, 1); | |
7f198e01 | 12036 | add_com_alias ("del", "delete", class_breakpoint, 1); |
c906108c | 12037 | if (xdb_commands) |
1bedd215 AC |
12038 | add_com ("db", class_breakpoint, delete_command, _("\ |
12039 | Delete some breakpoints.\n\ | |
c906108c | 12040 | Arguments are breakpoint numbers with spaces in between.\n\ |
1bedd215 | 12041 | To delete all breakpoints, give no argument.\n")); |
c906108c | 12042 | |
1a966eab AC |
12043 | add_cmd ("breakpoints", class_alias, delete_command, _("\ |
12044 | Delete some breakpoints or auto-display expressions.\n\ | |
c906108c SS |
12045 | Arguments are breakpoint numbers with spaces in between.\n\ |
12046 | To delete all breakpoints, give no argument.\n\ | |
1a966eab | 12047 | This command may be abbreviated \"delete\"."), |
c906108c SS |
12048 | &deletelist); |
12049 | ||
1bedd215 AC |
12050 | add_com ("clear", class_breakpoint, clear_command, _("\ |
12051 | Clear breakpoint at specified line or function.\n\ | |
c906108c SS |
12052 | Argument may be line number, function name, or \"*\" and an address.\n\ |
12053 | If line number is specified, all breakpoints in that line are cleared.\n\ | |
12054 | If function is specified, breakpoints at beginning of function are cleared.\n\ | |
1bedd215 AC |
12055 | If an address is specified, breakpoints at that address are cleared.\n\ |
12056 | \n\ | |
12057 | With no argument, clears all breakpoints in the line that the selected frame\n\ | |
c906108c SS |
12058 | is executing in.\n\ |
12059 | \n\ | |
1bedd215 | 12060 | See also the \"delete\" command which clears breakpoints by number.")); |
a6cc4789 | 12061 | add_com_alias ("cl", "clear", class_breakpoint, 1); |
c906108c | 12062 | |
1bedd215 | 12063 | c = add_com ("break", class_breakpoint, break_command, _("\ |
31e2b00f AS |
12064 | Set breakpoint at specified line or function.\n" |
12065 | BREAK_ARGS_HELP ("break"))); | |
5ba2abeb | 12066 | set_cmd_completer (c, location_completer); |
c94fdfd0 | 12067 | |
c906108c SS |
12068 | add_com_alias ("b", "break", class_run, 1); |
12069 | add_com_alias ("br", "break", class_run, 1); | |
12070 | add_com_alias ("bre", "break", class_run, 1); | |
12071 | add_com_alias ("brea", "break", class_run, 1); | |
12072 | ||
7681d515 PM |
12073 | if (xdb_commands) |
12074 | add_com_alias ("ba", "break", class_breakpoint, 1); | |
c906108c SS |
12075 | |
12076 | if (dbx_commands) | |
12077 | { | |
1bedd215 AC |
12078 | add_abbrev_prefix_cmd ("stop", class_breakpoint, stop_command, _("\ |
12079 | Break in function/address or break at a line in the current file."), | |
c5aa993b JM |
12080 | &stoplist, "stop ", 1, &cmdlist); |
12081 | add_cmd ("in", class_breakpoint, stopin_command, | |
1a966eab | 12082 | _("Break in function or address."), &stoplist); |
c5aa993b | 12083 | add_cmd ("at", class_breakpoint, stopat_command, |
1a966eab | 12084 | _("Break at a line in the current file."), &stoplist); |
1bedd215 AC |
12085 | add_com ("status", class_info, breakpoints_info, _("\ |
12086 | Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
12087 | The \"Type\" column indicates one of:\n\ |
12088 | \tbreakpoint - normal breakpoint\n\ | |
12089 | \twatchpoint - watchpoint\n\ | |
12090 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
12091 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
12092 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
12093 | address and file/line number respectively.\n\ |
12094 | \n\ | |
12095 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
12096 | are set to the address of the last breakpoint listed unless the command\n\ |
12097 | is prefixed with \"server \".\n\n\ | |
c906108c | 12098 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1bedd215 | 12099 | breakpoint set.")); |
c906108c SS |
12100 | } |
12101 | ||
1bedd215 AC |
12102 | add_info ("breakpoints", breakpoints_info, _("\ |
12103 | Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
12104 | The \"Type\" column indicates one of:\n\ |
12105 | \tbreakpoint - normal breakpoint\n\ | |
12106 | \twatchpoint - watchpoint\n\ | |
12107 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
12108 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
12109 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
12110 | address and file/line number respectively.\n\ |
12111 | \n\ | |
12112 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
12113 | are set to the address of the last breakpoint listed unless the command\n\ |
12114 | is prefixed with \"server \".\n\n\ | |
c906108c | 12115 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1bedd215 | 12116 | breakpoint set.")); |
c906108c | 12117 | |
6b04bdb7 MS |
12118 | add_info_alias ("b", "breakpoints", 1); |
12119 | ||
c906108c | 12120 | if (xdb_commands) |
1bedd215 AC |
12121 | add_com ("lb", class_breakpoint, breakpoints_info, _("\ |
12122 | Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
12123 | The \"Type\" column indicates one of:\n\ |
12124 | \tbreakpoint - normal breakpoint\n\ | |
12125 | \twatchpoint - watchpoint\n\ | |
12126 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
12127 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
12128 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
12129 | address and file/line number respectively.\n\ |
12130 | \n\ | |
12131 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
12132 | are set to the address of the last breakpoint listed unless the command\n\ |
12133 | is prefixed with \"server \".\n\n\ | |
c906108c | 12134 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1bedd215 | 12135 | breakpoint set.")); |
c906108c | 12136 | |
1a966eab AC |
12137 | add_cmd ("breakpoints", class_maintenance, maintenance_info_breakpoints, _("\ |
12138 | Status of all breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
12139 | The \"Type\" column indicates one of:\n\ |
12140 | \tbreakpoint - normal breakpoint\n\ | |
12141 | \twatchpoint - watchpoint\n\ | |
12142 | \tlongjmp - internal breakpoint used to step through longjmp()\n\ | |
12143 | \tlongjmp resume - internal breakpoint at the target of longjmp()\n\ | |
12144 | \tuntil - internal breakpoint used by the \"until\" command\n\ | |
1a966eab AC |
12145 | \tfinish - internal breakpoint used by the \"finish\" command\n\ |
12146 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
c906108c SS |
12147 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ |
12148 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1a966eab AC |
12149 | address and file/line number respectively.\n\ |
12150 | \n\ | |
12151 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
12152 | are set to the address of the last breakpoint listed unless the command\n\ |
12153 | is prefixed with \"server \".\n\n\ | |
c906108c | 12154 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1a966eab | 12155 | breakpoint set."), |
c906108c SS |
12156 | &maintenanceinfolist); |
12157 | ||
44feb3ce TT |
12158 | add_prefix_cmd ("catch", class_breakpoint, catch_command, _("\ |
12159 | Set catchpoints to catch events."), | |
12160 | &catch_cmdlist, "catch ", | |
12161 | 0/*allow-unknown*/, &cmdlist); | |
12162 | ||
12163 | add_prefix_cmd ("tcatch", class_breakpoint, tcatch_command, _("\ | |
12164 | Set temporary catchpoints to catch events."), | |
12165 | &tcatch_cmdlist, "tcatch ", | |
12166 | 0/*allow-unknown*/, &cmdlist); | |
12167 | ||
12168 | /* Add catch and tcatch sub-commands. */ | |
12169 | add_catch_command ("catch", _("\ | |
12170 | Catch an exception, when caught.\n\ | |
12171 | With an argument, catch only exceptions with the given name."), | |
12172 | catch_catch_command, | |
a96d9b2e | 12173 | NULL, |
44feb3ce TT |
12174 | CATCH_PERMANENT, |
12175 | CATCH_TEMPORARY); | |
12176 | add_catch_command ("throw", _("\ | |
12177 | Catch an exception, when thrown.\n\ | |
12178 | With an argument, catch only exceptions with the given name."), | |
12179 | catch_throw_command, | |
a96d9b2e | 12180 | NULL, |
44feb3ce TT |
12181 | CATCH_PERMANENT, |
12182 | CATCH_TEMPORARY); | |
12183 | add_catch_command ("fork", _("Catch calls to fork."), | |
12184 | catch_fork_command_1, | |
a96d9b2e | 12185 | NULL, |
44feb3ce TT |
12186 | (void *) (uintptr_t) catch_fork_permanent, |
12187 | (void *) (uintptr_t) catch_fork_temporary); | |
12188 | add_catch_command ("vfork", _("Catch calls to vfork."), | |
12189 | catch_fork_command_1, | |
a96d9b2e | 12190 | NULL, |
44feb3ce TT |
12191 | (void *) (uintptr_t) catch_vfork_permanent, |
12192 | (void *) (uintptr_t) catch_vfork_temporary); | |
12193 | add_catch_command ("exec", _("Catch calls to exec."), | |
12194 | catch_exec_command_1, | |
a96d9b2e SDJ |
12195 | NULL, |
12196 | CATCH_PERMANENT, | |
12197 | CATCH_TEMPORARY); | |
12198 | add_catch_command ("syscall", _("\ | |
12199 | Catch system calls by their names and/or numbers.\n\ | |
12200 | Arguments say which system calls to catch. If no arguments\n\ | |
12201 | are given, every system call will be caught.\n\ | |
12202 | Arguments, if given, should be one or more system call names\n\ | |
12203 | (if your system supports that), or system call numbers."), | |
12204 | catch_syscall_command_1, | |
12205 | catch_syscall_completer, | |
44feb3ce TT |
12206 | CATCH_PERMANENT, |
12207 | CATCH_TEMPORARY); | |
44feb3ce TT |
12208 | add_catch_command ("exception", _("\ |
12209 | Catch Ada exceptions, when raised.\n\ | |
12210 | With an argument, catch only exceptions with the given name."), | |
12211 | catch_ada_exception_command, | |
a96d9b2e | 12212 | NULL, |
44feb3ce TT |
12213 | CATCH_PERMANENT, |
12214 | CATCH_TEMPORARY); | |
12215 | add_catch_command ("assert", _("\ | |
12216 | Catch failed Ada assertions, when raised.\n\ | |
12217 | With an argument, catch only exceptions with the given name."), | |
12218 | catch_assert_command, | |
a96d9b2e | 12219 | NULL, |
44feb3ce TT |
12220 | CATCH_PERMANENT, |
12221 | CATCH_TEMPORARY); | |
c5aa993b | 12222 | |
1bedd215 AC |
12223 | c = add_com ("watch", class_breakpoint, watch_command, _("\ |
12224 | Set a watchpoint for an expression.\n\ | |
06a64a0b | 12225 | Usage: watch [-l|-location] EXPRESSION\n\ |
c906108c | 12226 | A watchpoint stops execution of your program whenever the value of\n\ |
06a64a0b TT |
12227 | an expression changes.\n\ |
12228 | If -l or -location is given, this evaluates EXPRESSION and watches\n\ | |
12229 | the memory to which it refers.")); | |
65d12d83 | 12230 | set_cmd_completer (c, expression_completer); |
c906108c | 12231 | |
1bedd215 AC |
12232 | c = add_com ("rwatch", class_breakpoint, rwatch_command, _("\ |
12233 | Set a read watchpoint for an expression.\n\ | |
06a64a0b | 12234 | Usage: rwatch [-l|-location] EXPRESSION\n\ |
c906108c | 12235 | A watchpoint stops execution of your program whenever the value of\n\ |
06a64a0b TT |
12236 | an expression is read.\n\ |
12237 | If -l or -location is given, this evaluates EXPRESSION and watches\n\ | |
12238 | the memory to which it refers.")); | |
65d12d83 | 12239 | set_cmd_completer (c, expression_completer); |
c906108c | 12240 | |
1bedd215 AC |
12241 | c = add_com ("awatch", class_breakpoint, awatch_command, _("\ |
12242 | Set a watchpoint for an expression.\n\ | |
06a64a0b | 12243 | Usage: awatch [-l|-location] EXPRESSION\n\ |
c906108c | 12244 | A watchpoint stops execution of your program whenever the value of\n\ |
06a64a0b TT |
12245 | an expression is either read or written.\n\ |
12246 | If -l or -location is given, this evaluates EXPRESSION and watches\n\ | |
12247 | the memory to which it refers.")); | |
65d12d83 | 12248 | set_cmd_completer (c, expression_completer); |
c906108c | 12249 | |
d77f58be SS |
12250 | add_info ("watchpoints", watchpoints_info, _("\ |
12251 | Status of watchpoints, or watchpoint number NUMBER.")); | |
12252 | ||
c906108c SS |
12253 | |
12254 | ||
920d2a44 AC |
12255 | /* XXX: cagney/2005-02-23: This should be a boolean, and should |
12256 | respond to changes - contrary to the description. */ | |
85c07804 AC |
12257 | add_setshow_zinteger_cmd ("can-use-hw-watchpoints", class_support, |
12258 | &can_use_hw_watchpoints, _("\ | |
12259 | Set debugger's willingness to use watchpoint hardware."), _("\ | |
12260 | Show debugger's willingness to use watchpoint hardware."), _("\ | |
c906108c SS |
12261 | If zero, gdb will not use hardware for new watchpoints, even if\n\ |
12262 | such is available. (However, any hardware watchpoints that were\n\ | |
12263 | created before setting this to nonzero, will continue to use watchpoint\n\ | |
85c07804 AC |
12264 | hardware.)"), |
12265 | NULL, | |
920d2a44 | 12266 | show_can_use_hw_watchpoints, |
85c07804 | 12267 | &setlist, &showlist); |
c906108c SS |
12268 | |
12269 | can_use_hw_watchpoints = 1; | |
fa8d40ab | 12270 | |
1042e4c0 SS |
12271 | /* Tracepoint manipulation commands. */ |
12272 | ||
12273 | c = add_com ("trace", class_breakpoint, trace_command, _("\ | |
12274 | Set a tracepoint at specified line or function.\n\ | |
12275 | \n" | |
12276 | BREAK_ARGS_HELP ("trace") "\n\ | |
12277 | Do \"help tracepoints\" for info on other tracepoint commands.")); | |
12278 | set_cmd_completer (c, location_completer); | |
12279 | ||
12280 | add_com_alias ("tp", "trace", class_alias, 0); | |
12281 | add_com_alias ("tr", "trace", class_alias, 1); | |
12282 | add_com_alias ("tra", "trace", class_alias, 1); | |
12283 | add_com_alias ("trac", "trace", class_alias, 1); | |
12284 | ||
7a697b8d SS |
12285 | c = add_com ("ftrace", class_breakpoint, ftrace_command, _("\ |
12286 | Set a fast tracepoint at specified line or function.\n\ | |
12287 | \n" | |
12288 | BREAK_ARGS_HELP ("ftrace") "\n\ | |
12289 | Do \"help tracepoints\" for info on other tracepoint commands.")); | |
12290 | set_cmd_completer (c, location_completer); | |
12291 | ||
0fb4aa4b PA |
12292 | c = add_com ("strace", class_breakpoint, strace_command, _("\ |
12293 | Set a static tracepoint at specified line, function or marker.\n\ | |
12294 | \n\ | |
12295 | strace [LOCATION] [if CONDITION]\n\ | |
12296 | LOCATION may be a line number, function name, \"*\" and an address,\n\ | |
12297 | or -m MARKER_ID.\n\ | |
12298 | If a line number is specified, probe the marker at start of code\n\ | |
12299 | for that line. If a function is specified, probe the marker at start\n\ | |
12300 | of code for that function. If an address is specified, probe the marker\n\ | |
12301 | at that exact address. If a marker id is specified, probe the marker\n\ | |
12302 | with that name. With no LOCATION, uses current execution address of\n\ | |
12303 | the selected stack frame.\n\ | |
12304 | Static tracepoints accept an extra collect action -- ``collect $_sdata''.\n\ | |
12305 | This collects arbitrary user data passed in the probe point call to the\n\ | |
12306 | tracing library. You can inspect it when analyzing the trace buffer,\n\ | |
12307 | by printing the $_sdata variable like any other convenience variable.\n\ | |
12308 | \n\ | |
12309 | CONDITION is a boolean expression.\n\ | |
12310 | \n\ | |
d41c0fc8 PA |
12311 | Multiple tracepoints at one place are permitted, and useful if their\n\ |
12312 | conditions are different.\n\ | |
0fb4aa4b PA |
12313 | \n\ |
12314 | Do \"help breakpoints\" for info on other commands dealing with breakpoints.\n\ | |
12315 | Do \"help tracepoints\" for info on other tracepoint commands.")); | |
12316 | set_cmd_completer (c, location_completer); | |
12317 | ||
1042e4c0 SS |
12318 | add_info ("tracepoints", tracepoints_info, _("\ |
12319 | Status of tracepoints, or tracepoint number NUMBER.\n\ | |
12320 | Convenience variable \"$tpnum\" contains the number of the\n\ | |
12321 | last tracepoint set.")); | |
12322 | ||
12323 | add_info_alias ("tp", "tracepoints", 1); | |
12324 | ||
12325 | add_cmd ("tracepoints", class_trace, delete_trace_command, _("\ | |
12326 | Delete specified tracepoints.\n\ | |
12327 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
12328 | No argument means delete all tracepoints."), | |
12329 | &deletelist); | |
12330 | ||
12331 | c = add_cmd ("tracepoints", class_trace, disable_trace_command, _("\ | |
12332 | Disable specified tracepoints.\n\ | |
12333 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
12334 | No argument means disable all tracepoints."), | |
12335 | &disablelist); | |
12336 | deprecate_cmd (c, "disable"); | |
12337 | ||
12338 | c = add_cmd ("tracepoints", class_trace, enable_trace_command, _("\ | |
12339 | Enable specified tracepoints.\n\ | |
12340 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
12341 | No argument means enable all tracepoints."), | |
12342 | &enablelist); | |
12343 | deprecate_cmd (c, "enable"); | |
12344 | ||
12345 | add_com ("passcount", class_trace, trace_pass_command, _("\ | |
12346 | Set the passcount for a tracepoint.\n\ | |
12347 | The trace will end when the tracepoint has been passed 'count' times.\n\ | |
12348 | Usage: passcount COUNT TPNUM, where TPNUM may also be \"all\";\n\ | |
12349 | if TPNUM is omitted, passcount refers to the last tracepoint defined.")); | |
12350 | ||
6149aea9 PA |
12351 | add_prefix_cmd ("save", class_breakpoint, save_command, |
12352 | _("Save breakpoint definitions as a script."), | |
12353 | &save_cmdlist, "save ", | |
12354 | 0/*allow-unknown*/, &cmdlist); | |
12355 | ||
12356 | c = add_cmd ("breakpoints", class_breakpoint, save_breakpoints_command, _("\ | |
12357 | Save current breakpoint definitions as a script.\n\ | |
cce7e648 | 12358 | This includes all types of breakpoints (breakpoints, watchpoints,\n\ |
6149aea9 PA |
12359 | catchpoints, tracepoints). Use the 'source' command in another debug\n\ |
12360 | session to restore them."), | |
12361 | &save_cmdlist); | |
12362 | set_cmd_completer (c, filename_completer); | |
12363 | ||
12364 | c = add_cmd ("tracepoints", class_trace, save_tracepoints_command, _("\ | |
1042e4c0 | 12365 | Save current tracepoint definitions as a script.\n\ |
6149aea9 PA |
12366 | Use the 'source' command in another debug session to restore them."), |
12367 | &save_cmdlist); | |
1042e4c0 SS |
12368 | set_cmd_completer (c, filename_completer); |
12369 | ||
6149aea9 PA |
12370 | c = add_com_alias ("save-tracepoints", "save tracepoints", class_trace, 0); |
12371 | deprecate_cmd (c, "save tracepoints"); | |
12372 | ||
1bedd215 | 12373 | add_prefix_cmd ("breakpoint", class_maintenance, set_breakpoint_cmd, _("\ |
fa8d40ab JJ |
12374 | Breakpoint specific settings\n\ |
12375 | Configure various breakpoint-specific variables such as\n\ | |
1bedd215 | 12376 | pending breakpoint behavior"), |
fa8d40ab JJ |
12377 | &breakpoint_set_cmdlist, "set breakpoint ", |
12378 | 0/*allow-unknown*/, &setlist); | |
1bedd215 | 12379 | add_prefix_cmd ("breakpoint", class_maintenance, show_breakpoint_cmd, _("\ |
fa8d40ab JJ |
12380 | Breakpoint specific settings\n\ |
12381 | Configure various breakpoint-specific variables such as\n\ | |
1bedd215 | 12382 | pending breakpoint behavior"), |
fa8d40ab JJ |
12383 | &breakpoint_show_cmdlist, "show breakpoint ", |
12384 | 0/*allow-unknown*/, &showlist); | |
12385 | ||
7915a72c AC |
12386 | add_setshow_auto_boolean_cmd ("pending", no_class, |
12387 | &pending_break_support, _("\ | |
12388 | Set debugger's behavior regarding pending breakpoints."), _("\ | |
12389 | Show debugger's behavior regarding pending breakpoints."), _("\ | |
6e1d7d6c AC |
12390 | If on, an unrecognized breakpoint location will cause gdb to create a\n\ |
12391 | pending breakpoint. If off, an unrecognized breakpoint location results in\n\ | |
12392 | an error. If auto, an unrecognized breakpoint location results in a\n\ | |
7915a72c | 12393 | user-query to see if a pending breakpoint should be created."), |
2c5b56ce | 12394 | NULL, |
920d2a44 | 12395 | show_pending_break_support, |
6e1d7d6c AC |
12396 | &breakpoint_set_cmdlist, |
12397 | &breakpoint_show_cmdlist); | |
fa8d40ab JJ |
12398 | |
12399 | pending_break_support = AUTO_BOOLEAN_AUTO; | |
765dc015 VP |
12400 | |
12401 | add_setshow_boolean_cmd ("auto-hw", no_class, | |
12402 | &automatic_hardware_breakpoints, _("\ | |
12403 | Set automatic usage of hardware breakpoints."), _("\ | |
12404 | Show automatic usage of hardware breakpoints."), _("\ | |
12405 | If set, the debugger will automatically use hardware breakpoints for\n\ | |
12406 | breakpoints set with \"break\" but falling in read-only memory. If not set,\n\ | |
12407 | a warning will be emitted for such breakpoints."), | |
12408 | NULL, | |
12409 | show_automatic_hardware_breakpoints, | |
12410 | &breakpoint_set_cmdlist, | |
12411 | &breakpoint_show_cmdlist); | |
74960c60 | 12412 | |
33e5cbd6 PA |
12413 | add_setshow_enum_cmd ("always-inserted", class_support, |
12414 | always_inserted_enums, &always_inserted_mode, _("\ | |
74960c60 VP |
12415 | Set mode for inserting breakpoints."), _("\ |
12416 | Show mode for inserting breakpoints."), _("\ | |
33e5cbd6 PA |
12417 | When this mode is off, breakpoints are inserted in inferior when it is\n\ |
12418 | resumed, and removed when execution stops. When this mode is on,\n\ | |
12419 | breakpoints are inserted immediately and removed only when the user\n\ | |
12420 | deletes the breakpoint. When this mode is auto (which is the default),\n\ | |
12421 | the behaviour depends on the non-stop setting (see help set non-stop).\n\ | |
12422 | In this case, if gdb is controlling the inferior in non-stop mode, gdb\n\ | |
12423 | behaves as if always-inserted mode is on; if gdb is controlling the\n\ | |
12424 | inferior in all-stop mode, gdb behaves as if always-inserted mode is off."), | |
74960c60 VP |
12425 | NULL, |
12426 | &show_always_inserted_mode, | |
12427 | &breakpoint_set_cmdlist, | |
12428 | &breakpoint_show_cmdlist); | |
765dc015 VP |
12429 | |
12430 | automatic_hardware_breakpoints = 1; | |
f3b1572e PA |
12431 | |
12432 | observer_attach_about_to_proceed (breakpoint_about_to_proceed); | |
c906108c | 12433 | } |